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Tesi sul tema "Information retrieval User education"
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1
Knight, Shirlee-ann. "User perceptions of information quality in world wide web information retrieval behaviour". Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2007. https://ro.ecu.edu.au/theses/316.
Testo completoAbstract (sommario):
In less than a generation, the World Wide Web has grown from a relatively small cyber play-ground of academic "geeks" into an 11.5 billion-page collection of heterogeneous, inter-connected, network of information and collective knowledge. As an information environment the World Wide Web is informatically representative of all that is good and bad about the human need to both absorb and transmit knowledge. The 'open' nature of the Web makes instantly available to anyone who can "log-on", a boundless digital library of information, the quality of which cannot be enforced before, during, or even after its publication. Scrutiny of Information Quality (IQ), is therefore left up to those publishers conscientious enough to care about the quality of the information they produce and the users who choose to employ the Web as an information retrieval tool. The following thesis is a qualitative investigation of how the users of information make value-judgments about the information they encounter and retrieve from the Web. Specifically, it examines perceptions of IQ from the perspective of eighty "academic" high-end users, who regularly engage the Web and its search engines to search for and retrieve high-quality information related to their research, teaching and learning. The investigation has adopted an inductive approach in the qualitative analysis of quantitative ( 10,080 separate pieces of user-data) data in the context of such established frameworks as Davis' ( 1986, I 989) Technology Acceptance Model (TAM), and Wang & Strong's ( 1996) contextual IQ framework that conceptualised dimensions of quality into four IQ categories, namely: intrinsic; representational; contextual; and accessibility IQ. Through the detailed analysis of the driving theory behind these, and other associated models of: (I) user IT acceptance; (2) Information Seeking Behaviour (ISB}; and (3) multi–dimensional characteristics of IQ; the researcher has sought to find synergies and develop an innovative framework by which to explore the impact of users' attitudes, expectations and perceptions of IQ on their Web information retrieval behaviours. The findings associated with the thesis are consistent with the proposal of a new Ongoing Technology Acceptance Model (OTAM), which facilitates the measurement of users perception of the predictability of their technology interactions, and has the capacity to more accurately investigate user individual differences. Importantly, the OTAM allows the constructs of the original TAM, along with a new construct “Perception of Interaction" (Pol) to be used to investigate users ongoing use of technologies. Findings associated with user perceptions of information quality are also explored and discussed in relation to a proposed life-cycle model of IQ.
2
Hill, Belinda Kaye. "Weaving information : students' use of the Internet to find information /". Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/7667.
Testo completo
3
Elkerton, Jay. "A behavioral evaluation of command-selection aids for inexperienced computer users/". Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/53875.
Testo completoAbstract (sommario):
Two experiments were conducted to determine the feasibility of providing online command-selection aids to novice users of an information retrieval system. The results of the first experiment revealed a difference in the mean and variability of search performance between novice and expert computer users. Half of the novices were performing much like experts, while the rest of the sample was extremely slow. These slower novices were using inefficient scrolling strategies and appeared to be unfamiliar with the structure of the database.
The second experiment evaluated whether novices could be assisted or trained with command-selection aids developed from the behavior of experts. The command-selection aids were defined in a 3 X 3 mixed factor design with type of model (frequency, sequence, or plan-based) as the between-subjects variable and dialogue initiative (user, computer, or mixed) as the within-subjects variable. The frequency and sequence models presented and ranked search procedures based on a command-usage profile and a command-transition matrix, respectively. The plan-based model presented an ordered set of search procedures with verbal explanations. All models were constructed for groups of homogeneous search problems selected by a sorting and cluster analysis. The three dialogue-initiatives determined whether the user, the computer, or both the user and computer controlled presentation of advice. Administration of the dialogue initiatives was completely counterbalanced and was followed by a final unaided transfer session.
As a result of receiving online aiding, the wide ranging search performance of novice subjects was improved both during assistance and transfer. Performance of aided novices was superior to the slow novices and equal to the fast novices and experts. All three command-selection models were equally effective, with exception of the sequence model which sometimes presented frequent and complicated advice. Of the dialogues, mixed-initiated advice was ineffective during the first aiding session possibly due to the difficulties novices faced deciding whether to receive the suggested assistance. The conclusion of the study was that online command—selection aids can be effective if providing appropriate feedback and minimizing the amount of dialogue in aiding.Ph. D.
4
Seamans, Nancy H. "Information Literacy: A Study of Freshman Students' Perceptions, with Recommendations". Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/27705.
Testo completoAbstract (sommario):
The research problem for this study is focused on the need to know how students acquire and use information. Research indicates a lack of understanding of what students know about information and how they use information and this study used the Information Literacy Competency Standards for Higher Education (Appendix A) as the basis for acquiring a better understanding of what kind of information freshman students at Virginia Tech need and how they acquire it during their first semester at college. Students were asked questions about their information use during fall semester 2000, using both email questioning and in face-to-face interviews. The data collected was used to develop insights into how students acquire and use information and resulted in suggestions that could be used in revising and improving instruction for freshman students that is provided by the University Libraries at Virginia Tech.Ph. D.
5
Haberle, Nikky. "Developing an evaluative framework for information literacy interventions". Thesis, Cape Technikon, 2001. http://hdl.handle.net/20.500.11838/1892.
Testo completoAbstract (sommario):
Thesis (MTech(Education)--Cape Technikon, Cape Town, 2001This study presents a theoretical evaluative framework for information literacy initiatives. The evaluative framework is based on a holistic behavioural taxonomic approach incorporating affective, cognitive, and physical domains. In this study the behavioural taxonomic approach was applied to the evaluation of a historical information literacy initiative, the IFYE (Integrated First Year Experience), developed by the Cape T echnikon in 1997, South Africa. The motivating factor behind the evaluation was to determine whether it would be suitable as an implementable initiative at other institutions in the Western Cape. This coincided with the aims of Infolit, who had invited institutions of Higher Education to submit pilot projects on information literacy in a drive to promote information literacy throughout the Western Cape. Although the IFYE initiative may not have realised its full potential, information literacy has drawn continued interest and other initiatives have since been developed. Application of two eXlsttng taxonomles, demonstrated distinct limitations in their application and a new taxonomy was developed within the South African educational context. The new taxonomy was applied to the theoretical evaluation of an innovative elearning information literacy initiative developed by the Cape Technikon in 2000, which has been accepted by Infolit for wider implementation throughout the Western Cape. The final section of the study presents recommendations based on the evaluation of the elearning initiative, information literacy initiatives in general, and structural changes to the developed taxonomy. Areas for further research are also discussed.
6
Fortin, Maurice G. "Faculty Use of the World Wide Web: Modeling Information Seeking Behavior in a Digital Environment". Thesis, University of North Texas, 2000. https://digital.library.unt.edu/ark:/67531/metadc2723/.
Testo completoAbstract (sommario):
There has been a long history of studying library users and their information seeking behaviors and activities. Researchers developed models to better understand these information seeking behaviors and activities of users. Most of these models were developed before the onset of the Internet. This research project studied faculty members' use of and their information seeking behaviors and activities on the Internet at Angelo State University, a Master's I institution. Using both a quantitative and qualitative methodology, differences were found between tenured and tenure-track faculty members on the perceived value of the Internet to meet their research and classroom information needs. Similar differences were also found among faculty members in the broad discipline areas of the humanities, social sciences, and sciences. Tenure-track faculty members reported a higher average Internet use per week than tenured faculty members. Based on in-depth, semi-structured interviews with seven tenured and seven tenure-track faculty members, an Internet Information Seeking Activities Model was developed to describe the information seeking activities on the Internet by faculty members at Angelo State University. The model consisted of four basic stages of activities: "Gathering," "Validating," "Linking" with a sub-stage of "Re-validating," and "Monitoring." There were two parallel stages included in the model. These parallel stages were "Communicating" and "Mentoring." The Internet Information Seeking Activities Model was compared to the behavioral model of information seeking by faculty members developed by Ellis. The Internet Model placed a greater emphasis on validating information retrieved from the Internet. Otherwise there were no other substantive changes to Ellis' model.
7
Davis, Dorothy F. (Dorothy Frances). "A Comparison of Bibliographic Instruction Methods on CD-ROM Databases". Thesis, University of North Texas, 1992. https://digital.library.unt.edu/ark:/67531/metadc279300/.
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8
Peet, Martha Stuart Williamson. "The gathering and use of information by fifth grade students with access to Palm® handhelds". Thesis, University of North Texas, 2003. https://digital.library.unt.edu/ark:/67531/metadc4398/.
Testo completoAbstract (sommario):
Handheld computers may hold the possibility for a one-to-one computer: student ratio. The impact of the use of Palm® (Palm, Inc.) handhelds on information acquisition and use by 5th grade students in a North Texas school during a class research project was investigated. Five research questions were examined using observation, interviews, surveys, and document analysis. Are there differences in information gathering and use with the Palm between gifted, dyslexic, and regular learners? What relevance criteria do students use to evaluate a web site to determine whether to download the site to the Palm and afterwards whether to use the downloaded site's information in the report? How do the Palms affect the writing process? Do the animations and concept maps produced on the Palm demonstrate understanding of the intended concepts? Are there significant differences in results (i.e., final products grade) between Palm users and non-Palm users? Three groups of learners in the class, gifted, dyslexic, and regular learners, participated in the study. The regular and dyslexic students reported using Web sites that had not been downloaded to the Palm. Students reported several factors used to decide whether to download Web sites, but the predominant deciding factor was the amount of information. The students used a combination of writing on paper and the Palm in the preparation of the report. Many students flipped between two programs, FreeWrite and Fling-It, finding information and then writing the facts into the report. The peer review process was more difficult with the Palm. Most students had more grammatical errors in this research report than in previous research projects. By creating animated drawings on the Palm handheld, the students demonstrated their understanding of the invention though sometimes the media or the student's drawing skills limited the quality of the final product. Creating the animations was motivational and addressed different learning styles than a written report alone. No statistically significant difference was found in the scores of the three 6+1 Traits categories, however the Palm users didn't meet the page-length requirement for the research project but the majority of the control class did.
9
Malaney, Gary Douglas. "The coordination of information in a highly differentiated organization : use of a computerized relational data base system as an integrating device for monitoring graduate education /". The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487261919113367.
Testo completo
10
Cross, Doug D. "Determining Standards for Sources of Free Information on the Internet for Inclusion in Academic Library Holdings by 2010". Digital Commons @ East Tennessee State University, 2002. https://dc.etsu.edu/etd/715.
Testo completoAbstract (sommario):
The purpose of this study was to develop a consensus from a panel of experts composed of library deans/directors, reference librarians, and instructors with online teaching experience. The panel developed the methodology necessary for evaluating free sources of information on the Internet for inclusion in academic library holdings by the year 2010. The following areas were explored as they related to the forecast: 1) The changes in higher education institutions that will be necessary to prepare students to deal with free sources of information on the Internet; 2) The procedures that librarians need to develop and implement to ensure that free Internet materials will meet quality standards for inclusion in academic library holdings; and 3) The things that publishers of free sources of information on the Internet need to do to ensure that their materials will be considered for inclusion in academic library holdings.
The Delphi panel was composed of 24 members: eight library deans/directors, eight reference librarians, and eight instructors with online teaching experience. The members of the panel were selected from the community colleges of the Tennessee Board of Regents System.
In the first round of the study, panelists responded to 10 open-ended questions on an e-mail questionnaire dealing with free sources of information on the Internet. The narrative responses to the questions were specific and provided a basis on which to develop the Round 2 Questionnaire. In the second round of the Delphi study, panelists responded to 9 questions with 42 subparts.
The results of this study may be used to project the information needs of students as well as suggest strategies for publishers on the basis of the data collected in this study. A major finding of the study was the need for reliable information in documents on the Internet. The Delphi panel also listed the lack of permanence of Internet sites as a major reason librarians do not use free sources of information on the Internet. The Delphi panel recommended that educators assist students in dealing with Internet materials by teaching them how to use critical thinking skills.
11
Shao, Bo. "User-centric Music Information Retrieval". FIU Digital Commons, 2011. http://digitalcommons.fiu.edu/etd/416.
Testo completoAbstract (sommario):
The rapid growth of the Internet and the advancements of the Web technologies have made it possible for users to have access to large amounts of on-line music data, including music acoustic signals, lyrics, style/mood labels, and user-assigned tags. The progress has made music listening more fun, but has raised an issue of how to organize this data, and more generally, how computer programs can assist users in their music experience.
An important subject in computer-aided music listening is music retrieval, i.e., the issue of efficiently helping users in locating the music they are looking for. Traditionally, songs were organized in a hierarchical structure such as genre->artist->album->track, to facilitate the users’ navigation. However, the intentions of the users are often hard to be captured in such a simply organized structure. The users may want to listen to music of a particular mood, style or topic; and/or any songs similar to some given music samples. This motivated us to work on user-centric music retrieval system to improve users’ satisfaction with the system.
The traditional music information retrieval research was mainly concerned with classification, clustering, identification, and similarity search of acoustic data of music by way of feature extraction algorithms and machine learning techniques. More recently the music information retrieval research has focused on utilizing other types of data, such as lyrics, user access patterns, and user-defined tags, and on targeting non-genre categories for classification, such as mood labels and styles. This dissertation focused on investigating and developing effective data mining techniques for (1) organizing and annotating music data with styles, moods and user-assigned tags; (2) performing effective analysis of music data with features from diverse information sources; and (3) recommending music songs to the users utilizing both content features and user access patterns.
12
Evans, Paul. "A multimedia system to instruct novice users of online library catalogues". View thesis, 1996. http://library.nepean.uws.edu.au/about/staff/thesis.html.
Testo completo
13
Evans, Paul. "A multimedia system to instruct novice users of online library catalogues". Thesis, View thesis, 1996. http://hdl.handle.net/1959.7/uws:342.
Testo completoAbstract (sommario):
The research reported here focuses on the application of multimedia to the teaching of information skills in academic libraries. Specifically, the research project has involved the development and evaluation of a multimedia system to instruct novice users of online library catalogues. The research has included an investigation of the characteristics and needs of novice library users. The ways in which novices approach using library-based information technologies which may be applied to any instructional programme for teaching novices how to use library-based information technologies. The research project has involved the development of a comprehensive multimedia system based on the theoretical model. The multimedia system was designed using Macromedia Director v.4.04. The production techniques and operation of the multimedia system are described in some detail. The multimedia system was evaluated and tested using formative evaluation strategies. The evaluation involved the prototype system being reviewed by expert librarians, and multimedia producers, as well as novice users of online library catalogues. The information gathered during the evaluation was used to make suggestions about improvements to the design of the prototype. The results of the evaluation are reported and analysed.
14
Costello, Anthony. "Facilitating Information Retrieval in Social Media User Interfaces". Doctoral diss., University of Central Florida, 2014. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/6257.
Testo completoAbstract (sommario):
As the amount of computer mediated information (e.g., emails, documents, multi-media) we need to process grows, our need to rapidly sort, organize and store electronic information likewise increases. In order to store information effectively, we must find ways to sort through it and organize it in a manner that facilitates efficient retrieval. The instantaneous and emergent nature of communications across networks like Twitter makes them suitable for discussing events (e.g., natural disasters) that are amorphous and prone to rapid changes. It can be difficult for an individual human to filter through and organize the large amounts of information that can pass through these types of social networks when events are unfolding rapidly. A common feature of social networks is the images (e.g., human faces, inanimate objects) that are often used by those who send messages across these networks. Humans have a particularly strong ability to recognize and differentiate between human Faces. This effect may also extend to recalling information associated with each human Face. This study investigated the difference between human Face images, non-human Face images and alphanumeric labels as retrieval cues under different levels of Task Load. Participants were required to recall key pieces of event information as they emerged from a Twitter-style message feed during a simulated natural disaster. A counter-balanced within-subjects design was used for this experiment. Participants were exposed to low, medium and high Task Load while responding to five different types of recall cues: (1) Nickname, (2) Non-Face, (3) Non-Face & Nickname, (4) Face and (5) Face & Nickname. The task required participants to organize information regarding emergencies (e.g., car accidents) from a Twitter-style message feed. The messages reported various events such as fires occurring around a fictional city. Each message was associated with a different recall cue type, depending on the experimental condition. Following the task, participants were asked to recall the information associated with one of the cues they worked with during the task. Results indicate that under medium and high Task Load, both Non-Face and Face retrieval cues increased recall performance over Nickname alone with Non-Faces resulting in the highest mean recall scores. When comparing medium to high Task Load: Face & Nickname and Non-Face significantly outperformed the Face condition. The performance in Non-Face & Nickname was significantly better than Face & Nickname. No significant difference was found between Non-Faces and Non-Faces & Nickname. Subjective Task Load scores indicate that participants experienced lower mental workload when using Non-Face cues than using Nickname or Face cues. Generally, these results indicate that under medium and high Task Load levels, images outperformed alphanumeric nicknames, Non-Face images outperformed Face images, and combining alphanumeric nicknames with images may have offered a significant performance advantage only when the image is that of a Face. Both theoretical and practical design implications are provided from these findings.Ph.D.
Doctorate
Industrial Engineering and Management Systems
Engineering and Computer Science
Industrial Engineering
15
Addy, Nicholas G. "Ontology driven geographic information retrieval". Thesis, Curtin University, 2009. http://hdl.handle.net/20.500.11937/2526.
Testo completoAbstract (sommario):
The theory of modern information retrieval processes must be improved to meet parallel growth and efficiency in its dependent hardware architectures. The growth in data sources facilitated by hardware improvements must be conversant with parallel growth at the user end of the information retrieval paradigm, encompassing both an increasing demand for data services and a widening user base. Contemporary sources refer to such growth as three dimensional, in reference to the expected and parallel growth in the key areas of hardware processing power, demand from current users of information services and an increase in demand via an extended user base consisting of institutions and organizations who are not characteristically defined by their use of geographic information. This extended user base is expected to grow due to the demand to utilise and incorporate geographic information as part of competitive business processes, to fill the need for advertising and spatial marketing demographics. The vision of the semantic web as such is the challenge of managing integration between diverse and increasing data sources and diverse and increasing end users of information. Whilst data standardisation is one means of achieving this vision at the source end of the information flow, it is not a solution in a free market of ideas. Information in its elemental form should be accessible regardless of the domain of its creation.In an environment where the users and sources are continually growing in scope and depth, the management of data via precise and relevant information retrieval requires techniques which can integrate information seamlessly between machines and users regardless of the domain of application or data storage methods. This research is the study of a theory of geographic information structure which can be applied to all aspects of information systems development, governing at a conceptual level the representation of information to meet the requirements of inter machine operability as well as inter user operability. This research entails a thorough study of the use of ontology from theoretical definition to modern use in information systems development and retrieval, in the geographic domain. This is a study examining how the use of words to describe geographic features are elements which can form a geographic ontology and evaluates WordNet, an English language ontology in the form of a lexical database as a structure for improving geographic information recall on Gazetteers. The results of this research conclude that WordNet can be utilised to as a methodology for improving search results in geographic information retrieval processes as a source for additional query terms, but only on a narrow user domain.
16
Kacem, Sahraoui Ameni. "Personalized information retrieval based on time-sensitive user profile". Thesis, Toulouse 3, 2017. http://www.theses.fr/2017TOU30111/document.
Testo completoAbstract (sommario):
Les moteurs de recherche, largement utilisés dans différents domaines, sont devenus la principale source d'information pour de nombreux utilisateurs. Cependant, les Systèmes de Recherche d'Information (SRI) font face à de nouveaux défis liés à la croissance et à la diversité des données disponibles. Un SRI analyse la requête soumise par l'utilisateur et explore des collections de données de nature non structurée ou semi-structurée (par exemple : texte, image, vidéo, page Web, etc.) afin de fournir des résultats qui correspondent le mieux à son intention et ses intérêts. Afin d'atteindre cet objectif, au lieu de prendre en considération l'appariement requête-document uniquement, les SRI s'intéressent aussi au contexte de l'utilisateur. En effet, le profil utilisateur a été considéré dans la littérature comme l'élément contextuel le plus important permettant d'améliorer la pertinence de la recherche. Il est intégré dans le processus de recherche d'information afin d'améliorer l'expérience utilisateur en recherchant des informations spécifiques. Comme le facteur temps a gagné beaucoup d'importance ces dernières années, la dynamique temporelle est introduite pour étudier l'évolution du profil utilisateur qui consiste principalement à saisir les changements du comportement, des intérêts et des préférences de l'utilisateur en fonction du temps et à actualiser le profil en conséquence. Les travaux antérieurs ont distingué deux types de profils utilisateurs : les profils à court-terme et ceux à long-terme. Le premier type de profil est limité aux intérêts liés aux activités actuelles de l'utilisateur tandis que le second représente les intérêts persistants de l'utilisateur extraits de ses activités antérieures tout en excluant les intérêts récents. Toutefois, pour les utilisateurs qui ne sont pas très actifs dont les activités sont peu nombreuses et séparées dans le temps, le profil à court-terme peut éliminer des résultats pertinents qui sont davantage liés à leurs intérêts personnels. Pour les utilisateurs qui sont très actifs, l'agrégation des activités récentes sans ignorer les intérêts anciens serait très intéressante parce que ce type de profil est généralement en évolution au fil du temps. Contrairement à ces approches, nous proposons, dans cette thèse, un profil utilisateur générique et sensible au temps qui est implicitement construit comme un vecteur de termes pondérés afin de trouver un compromis en unifiant les intérêts récents et anciens. Les informations du profil utilisateur peuvent être extraites à partir de sources multiples. Parmi les méthodes les plus prometteuses, nous proposons d'utiliser, d'une part, l'historique de recherche, et d'autre part les médias sociauxRecently, search engines have become the main source of information for many users and have been widely used in different fields. However, Information Retrieval Systems (IRS) face new challenges due to the growth and diversity of available data. An IRS analyses the query submitted by the user and explores collections of data with unstructured or semi-structured nature (e.g. text, image, video, Web page etc.) in order to deliver items that best match his/her intent and interests. In order to achieve this goal, we have moved from considering the query-document matching to consider the user context. In fact, the user profile has been considered, in the literature, as the most important contextual element which can improve the accuracy of the search. It is integrated in the process of information retrieval in order to improve the user experience while searching for specific information. As time factor has gained increasing importance in recent years, the temporal dynamics are introduced to study the user profile evolution that consists mainly in capturing the changes of the user behavior, interests and preferences, and updating the profile accordingly. Prior work used to discern short-term and long-term profiles. The first profile type is limited to interests related to the user's current activities while the second one represents user's persisting interests extracted from his prior activities excluding the current ones. However, for users who are not very active, the short-term profile can eliminate relevant results which are more related to their personal interests. This is because their activities are few and separated over time. For users who are very active, the aggregation of recent activities without ignoring the old interests would be very interesting because this kind of profile is usually changing over time. Unlike those approaches, we propose, in this thesis, a generic time-sensitive user profile that is implicitly constructed as a vector of weighted terms in order to find a trade-off by unifying both current and recurrent interests. User profile information can be extracted from multiple sources. Among the most promising ones, we propose to use, on the one hand, searching history. Data from searching history can be extracted implicitly without any effort from the user and includes issued queries, their corresponding results, reformulated queries and click-through data that has relevance feedback potential. On the other hand, the popularity of Social Media makes it as an invaluable source of data used by users to express, share and mark as favorite the content that interests them
17
Trenner, Lesley. "Criteria for user-friendliness in retrieval software design". Thesis, University College London (University of London), 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283822.
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18
Ennis, Mark. "Modelling the IR task : supporting the user". Thesis, City University London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287670.
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19
Gatian, Amy Elizabeth Williams. "User information satisfaction (UIS) and user productivity: an empirical examination". Diss., Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/54361.
Testo completoAbstract (sommario):
In this research the relationships between user information satisfaction (UIS) and user productivity were examined. Two users groups were used to test the following hypotheses:
H₁A: There is no relationship between UIS and perceptions of decision-making quality for academic department heads.
H₁B: There is no relationship between UIS and perceptions of decision-making quality for managers within the controller’s office.
H₂: There is no relationship between UIS and objectively measured productivity for managers within the controller’s office.
H₃: There is no relationship between UIS and a user’s length of experience with a system.
H₄A: There is no relationship between UIS and a user’s age.
H₄B: There is no relationship between UIS and a user’s sex.
H₄C: There is no relationship between UIS and a user’s level of education.
Data utilized in testing the hypotheses were collected with a packet of six questionnaires mailed to the controllers of 100 universities. Usable responses were obtained from 107 of 300 controller’s office managers and 77 of 300 academic users. H₁A, H₁B and H₂ were tested with canonical correlation analysis. H₃, H₄A, H₄B and H₄C were tested with multiple regression.
The findings can be summarized as follows:
1. Satisfaction with computer processing was correlated with making better operating budget decisions for both groups and helping academic users track activities in research, grant and designated gift accounts.
2. Satisfaction with system related problem finding was correlated with elimination of steps and making jobs easier for managers, and with helping academic users track activity in research accounts, and to feel they have benefited overall from FRS.
3. Satisfaction with the linear combination of inputs and problem finding was correlated with financial transactions per full time employee equivalents (FTE), late internal reports per total internal reports and number of ledger accounts per FTE.
4. More frequent users of FRS were more satisfied. Additionally, UIS and mandatory system usage were positively correlated.
5. UIS and sex were moderately correlated. Specifically, males within the academic group were less satisfied with FRS than the females surveyed.Ph. D.
20
Fuhr, Norbert Grossjohann Kai Kriewel Sascha. "A Query Language and User Interface for XML Information Retrieval". Gerhard-Mercator-Universitaet Duisburg, 2004. http://www.ub.uni-duisburg.de/ETD-db/theses/available/duett-07022004-114955/.
Testo completoAbstract (sommario):
In:
Intelligent Search on XML Data : Applications, Languages, Models, Implementations, and Benchmarks / Henk Blanken ... [et al.] (eds.)- Berlin : Springer, 2003. - ISBN 3-540-40768-5, S. 59-75
21
Backhausen, Daniel [Verfasser]. "Adaptive User Support in Interactive Information Retrieval Processes / Daniel Backhausen". Hagen : FernUniversität in Hagen, 2017. http://d-nb.info/1137181699/34.
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22
Veerasamy, Aravindan. "Visualization and user interface techniques for interactive information retrieval systems". Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/9244.
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23
Robins, David B. (David Bruce). "Shifts of Focus Among Dimensions of User Information Problems as Represented During Interactive Information Retrieval". Thesis, University of North Texas, 1998. https://digital.library.unt.edu/ark:/67531/metadc935560/.
Testo completoAbstract (sommario):
The goal of this study is to increase understanding of information problems as they are revealed in interactions among users and search intermediaries during information retrieval. Specifically, this study seeks to investigate: (a) how interaction between users and search intermediaries reveals aspects of user information problems; (b) to explore the concept of representation with respect to information problems in interactive information retrieval; and (c) how user and search intermediaries focus on aspects of user information problems during the course of searches. This project extends research on interactive information retrieval, and presents a theoretical framework that synthesizes rational and non-rational questions concerning mental representation as it pertains to user's understanding of information problems.
24
Banwell, Linda M. "PLUS : a system architecture for Personalized Library User Support". Thesis, University of Exeter, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359596.
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25
Xie, Haiyan. "User model driven architecture for information retrieval in construction project management". [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0008374.
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Mullany, Michael John. "An analysis of the relationship between analyst-user cognitive style differences and user resistance to information systems". Master's thesis, University of Cape Town, 1989. http://hdl.handle.net/11427/15855.
Testo completoAbstract (sommario):
Bibliography: pages 102-109.This study investigated the relationships between user resistance to new information systems and other factors, the chief of which was the differences in cognitive problem-solving styles between systems developers (analysts) and users. In addition, associations were tested between user resistance and the following: system accuracy, system reliability, the analyst's attitude, the analyst-user relationship, analyst-user dissonance, the user's age and the user's length of service with his current employer. All data was collected at confidential interviews with the key users and key analysts of 34 post-implementation systems service were recorded at these interviews. Ages and lengths of User resistance was determined from the number of complaints made by users regarding the systems and their manner of implementation. Cognitive style was measured using the Kirton Adaption-innovation Inventory (KAI). All other parameters were measured as responses to suitably phrased questions, quantified using seven-point scales. A significant positive association between user resistance and analyst-user cognitive style difference was found. A model was then developed which enables the estimation of user resistance prior to system development with the aid of the KAI. Significant negative associations were found to exist between user resistance and system accuracy, and user resistance and system reliability. No relationships between user resistance and either user age or user length of service were found.
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Blocks, Dorothee. "A qualitative study of thesaurus integration for end-user searching". Thesis, University of South Wales, 2004. https://pure.southwales.ac.uk/en/studentthesis/a-qualitative-study-of-thesaurus-integration-for-enduser-searching(5aeaaccb-9baf-4edc-b769-1adf7fd9d256).html.
Testo completoAbstract (sommario):
The research conducted for this thesis investigates the impact of thesauri on users' information searching behaviour, and the integration of thesauri into information searching interfaces in order to support the searching process. The work reported here consists of two preliminary studies, which served to refine research questions and explore the methodology, followed by two in-depth studies. The two in-depth studies were conducted with FACET, an experimental system developed at the University of Glamorgan in the context of an EPSRC (Engineering and Physical Sciences Research Council)-funded project focussing on faceted information retrieval in indexed multimedia collections. These studies were conducted with the participation of museum and library professionals. The author used a combination of qualitative and quantitative methods, such as "think aloud" protocols, questionnaires, application log files and content analysis. The in-depth studies resulted in important findings regarding the FACET interface which were considered in its further development. Findings also relate to thesaurus use in general - it was for example observed that behaviours such as browsing the thesaurus are not suitable at all search stages, so that users need to be guided in their choice of tools. One of the main findings was that conceptual problems encountered by searchers with little formal search training caused more difficulties than those related to interface design. This resulted in the conclusion that the information searching process needs to be supported by the interface and that more extensive use of thesauri in the form of support tools is possible at different stages of the search process. Based on literature on the information searching process and data from the first FACET study, the basis for a model of information searching in controlled vocabulary enhanced systems was developed and subsequently refined with data from the second in-depth study. This model aims in particular at facilitating the design and development of such systems. It consists of a textual and graphical representation of the search stages and an account of potential problems, their causes, possible detrimental effects on the further progress of the search and suggestions on how these can be avoided, under particular consideration of tools based on controlled vocabularies.
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Albertson, Dan Edward. "A domain-centric approach to designing user interfaces of video retrieval systems". [Bloomington, Ind.] : Indiana University, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3277961.
Testo completoAbstract (sommario):
Thesis (Ph.D.)--Indiana University, School of Information Science, 2007.Source: Dissertation Abstracts International, Volume: 68-09, Section: A, page: 3643. Adviser: Javed Mostafa. Title from dissertation home page (viewed Apr. 30, 2008).
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Tramullas, Jesús, e Ana I. Sánchez-Casabón. "Scientific information retrieval behavior: A case study in students of Philosophy". Madrid: Univ. Autónoma de Madrid, 2010. http://hdl.handle.net/10150/252852.
Testo completoAbstract (sommario):
The behavior and patterns of recovery and processing of digital information by users is a recurring theme in the literature. The study of these behaviors are carried out through observation techniques and analysis of processes, actions and decisions undertaken by users in different situations. This paper presents the data resulting from the study of patterns of recovery and management of reference information of three consecutive courses of a specialized subject. The findings obtained showed a clear difference between patterns of information retrieval and obtained prior to the end of the training process, but there has been a significant change in the ultimate goal of users or appreciable changes in their prospects for application in other environments.
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Greisdorf, Howard F. "Relevance Thresholds: A Conjunctive/Disjunctive Model of End-User Cognition as an Evaluative Process". Thesis, University of North Texas, 2000. https://digital.library.unt.edu/ark:/67531/metadc2717/.
Testo completoAbstract (sommario):
This investigation identifies end-user cognitive heuristics that facilitate judgment and evaluation during information retrieval (IR) system interactions. The study extends previous research surrounding relevance as a key construct for representing the value end-users ascribe to items retrieved from IR systems and the perceived effectiveness of such systems. The Lens Model of user cognition serves as the foundation for design and interpretation of the study; earlier research in problem solving, decision making, and attitude formation also contribute to the model and analysis. A self reporting instrument collected evaluative responses from 32 end-users related to 1432 retrieved items in relation to five characteristics of each item: topical, pertinence, utility, systematic, and motivational levels of relevance. The nominal nature of the data collected led to non-parametric statistical analyses that indicated that end-user evaluation of retrieved items to resolve an information problem at hand is most likely a multi-stage process. That process appears to be a cognitive progression from topic to meaning (pertinence) to functionality (use). Each step in end-user evaluative processing engages a cognitive hierarchy of heuristics that includes consideration (of appropriate cues), differentiation (the positive or negative aspects of those cues considered), and aggregation (the combination of differentiated cue aspects needed to render an evaluative label of the item in relation to the information problem at hand). While individuals may differ in their judgments and evaluations of retrieved items, they appear to make those decisions by using consistent heuristic approaches.
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Ahmed, S. M. Zabed. "A user-centered design of a web-based interface to bibliographic databases". Thesis, Loughborough University, 2002. https://dspace.lboro.ac.uk/2134/6893.
Testo completoAbstract (sommario):
This thesis reports results of a research study into the usefulness of a user-centred approach for designing information retrieval interfaces. The main objective of the research was to examine the usability of an existing Web-based IR system in order to design a user-centred prototype Web interface. A series of usability experiments was carried out with the Web of Science. The first experiment was carried out using both novice and experienced users to see their performance and satisfaction with the interface. A set of search tasks was obtained from a user survey and was used in the study. The results showed that there were no significant differences in the time taken to complete the tasks, and the number of different search terms used between the two search groups. Novice users were significantly more satisfied with the interface than the experienced group. However, the experienced group was significantly more successful, and made fewer errors than the novice users. The second experiment was conducted on novices' learning and retention with the Web of Science using the same equipment, tasks and environment. The results of the original learning phase of the experiment showed that novices could readily pick up interface functionality when a brief training was provided. However, their retention of search skills weakened over time. Their subjective satisfaction with the interface also diminished from learning to retention. These findings suggested that the fundamental difficulties of searching IR systems still remain with the Web-based version. A heuristic evaluation was carried out to find out the usability problems in the Web of Science interface. Three human factors experts evaluate the interface. The heuristic evaluation was very helpful in identifying some interface design issues for Web IR systems. The most fundamental of these was increasing the match between system and the real world. The results of both the usability testing and the heuristic evaluations served as a baseline for designing a prototype Web interface. The prototype was designed based on a conceptual model of users' information seeking. Various usability evaluation methods were used to test the usability of the prototype system. After each round of testing, the interface was modified in accordance with the test findings. A summative evaluation of the prototype interface showed that both novice and experienced users improved their search performance. Comparative analysis with the earlier usability studies also showed significant improvements in performance and satisfaction with the prototype. These results show that user-centred methods can yield better interface design for IR systems.
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Mooney, Gabrielle Joanne. "Intelligent information retrieval from the World Wide Web using fuzzy user modelling". Thesis, De Montfort University, 1999. http://hdl.handle.net/2086/10685.
Testo completoAbstract (sommario):
This thesis investigates the application. of fuzzy logic techniques and user modelling to the process of information retrieval (IR) from the World Wide Web (WWW). The research issue is whether this process can be improved through such an application. The exponential rise of information itself as an invaluable global commodity, coupled with .acceierating development in. computing and telecommunications, and boosted by networked information sources such as the WWW, has led to the development of tools, such as search engines, to facilitate information search and retrieval. However, despite their sophistication, they are unable effectively to. address users' information. needs. Also, as the-WWW can be seen as a dynamic, continuously changing global information corpus, these tools suffer from the problems of irrelevancy and redundancy. Therefore, in order to overcome these problems and remain effective, IR systems need to become 'intelligent' in some way. It is from this premise that the focus of this research has developed. Initially, theoretical and investigative research into the areas ofIR from electronic sources and the nature of the Internet (including the WWW) revealed that highly sophisticated systems are being developed and there is a drive towards the integration of, for example, electronic libraries, COROM networks, and the WWW. Research into intelligent IR, the use of AI techniques to improve the IR process, informed an evaluation of various approaches. This revealed that a munber of techniques, for example, expert systems, neural networks and semantic networks, have been employed, with limited success. Owing to the nature of the WWW, though, many of the previous AI approaches are inapplicable as they rely too much on extensive knowledge of the retrieval corpus. However, the evaluation suggested that fuzzy logic, with its inherent ability to capture partial knowledge within fuzzy sets, is a valid approach. User modelling research indicated that adaptive user stereotypes are a fruitful way to represent different types of user and their information need. Here, these stereotypes are represented as fuzzy sets, ensuring flexibility and adaptivity. The goal of the reported research. then, was not to. develop an 'intelligent agent' but to apply fuzzy logic techniques and user modelling to the process of user query formulation, in order to test the research issue. This issue was whether the application of these techniques could improve the IR process. A prototype system, the Fuzzy Modelling Query Assistant (FMQA), was developed that attempts intelligently to assist the user in capturing their information need. The concept was to refine the user's query before submitting it to an existing search engine, in order to improve upon the IR results of using the search tool alone. To address the research issue, a user study of the FMQA was performed. The design and conduct is reported in depth. The study results were analysed and the findings are given. The results indicate that,. for certain types of user especially, the FMQA does provide improvement in the IR process, in terms of the results. There is a critical review of the research aims in the light of the results, conclusions are drawn and recommendations for future research given.
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Konstantelos, Leonidas. "Digital art in digital libraries : a study of user-oriented information retrieval". Thesis, University of Glasgow, 2009. http://theses.gla.ac.uk/1333/.
Testo completoAbstract (sommario):
This thesis presents an empirical investigation of the problems of including pictorial digital art in the context of Digital Libraries (DLs). The rational for this work is that digital art material is a significant source of learning and research, provided that it is systematically collected and maintained in structured electronic repositories. The thesis addresses a fundamental question: How to provide description and retrieval services, which are based on the needs of digital art user communities? This raises three research issues. One is the need to combine DL collections into meaningful and functional content. The second is the importance of a user-oriented approach to designing and developing Digital Libraries. The third is the requirement for continuing access to digital art as a record of modern culture. These questions are explored through a needs assessment targeted to Arts & Humanities scholars, digital artists and representatives of the DL community. A data collection methodology is developed, based on the principles of Social Informatics and a case study of evaluation efforts in extant projects. The results from this process demonstrate that the scholarly value of digital art can be established by aggregating material from various repositories into a unified dataset. The results also identify specific documentation and retrieval issues deriving from inclusion of digital art in a DL environment that necessitate further investigation. To this end, a review of sixteen digital art online resources is conducted which reveals ad-hoc collection strategies and metadata deficiencies. The work presents a prototype Digital Library for enhancing the educational outcome of digital art. The application is used as an implementation platform for material aggregation and augmented documentation through the Media Art Notation System (MANS). The summative evaluation findings confirm that the suggested solutions are highly rated by the targeted audiences. The thesis makes a contribution to academic knowledge in situating the representation of digital art within modern society. By critically examining the unique requirements of this material using the resources of social theory, the thesis represents a contemporary and pragmatic perspective on digital media art. In a well-structured Digital Library, the scholarly potential of digital art is much greater than the currently employed ad-hoc context. This work offers a sustained reflection and a roadmap for selecting and consistently applying a strategy that aims to continually improve the quality of digital art provision.
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Hider, Philip Martin. "User redefinition of search goals through interaction with an information retrieval system". Thesis, City, University of London, 2004. http://openaccess.city.ac.uk/19506/.
Testo completoAbstract (sommario):
Search goals of users of information retrieval systems have commonly been assumed to be static and well-formed. However, a significant amount of goal redefinition is detected in the studies described. A pilot study examined user behaviour at a library OPAC, showing that search results would quite frequently induce users to reconsider and revise their search goals, sometimes following up with a new search based on this revision (labeled "strong" goal redefinition). The main analysis employed transaction logs from the OCLC FirstSearch service, investigating what factors, if any, might affect the amount of goal redefinition that takes place during a search session. To this end, ten hypotheses were proposed and considered. Within each search session, logged queries were coded according to their conceptual differences or similarities, in order for indices of strong goal redefinition to be constructed: a chronological content analysis was thus performed on the transaction logs. The indices of redefinition for search sessions on different FirstSearch databases were compared. It was found that different databases induced goal redefinition to different extents. Further analysis showed that the metadata displayed by a database appeared to affect the amount of goal redefinition, and that the presence of abstracts in results was a positive factor, as was the presence of descriptors and identifiers, perhaps because of the former's hyperlinking nature on the FirstSearch interface. On the other hand, no evidence was found to indicate that abstract length has much of an effect on goal redefinition, nor hit rate or levels of precision and recall. Of the two indices of redefinition that were produced, the "refined" index showed signs of greater precision. Implications of the findings are discussed. It is suggested that goal redefinition should be considered a positive result of system feedback, and that systems should readily allow users to follow up on redefined goals. Abstracts and summaries of documents should be presented to the user as frequently as possible, and hyperlinks from key terms in the metadata should also be created to assist evolving searches. The importance of how system feedback is encountered by the user is emphasized in a new model of information retrieval, which embraces the nonconscious as part of the "cognitive viewpoint," allowing for nonconscious information wants to enter into a user's consciousness through cues encountered during the scanning of search results, triggering a redefinition of search goal. This thesis paves the way for a considerable amount of potentially important research, including: further testing and development of the index of goal redefinition; deeper transaction log analyses, perhaps using screen recorders, examining semantic content and contextualizing at the level of the query; and further identification and analysis of the factors affecting goal redefinition, across different types of information retrieval system.
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Limbu, Dilip Kumar. "Contextual information retrieval from the WWW". Click here to access this resource online, 2008. http://hdl.handle.net/10292/450.
Testo completoAbstract (sommario):
Contextual information retrieval (CIR) is a critical technique for today’s search engines in terms of facilitating queries and returning relevant information. Despite its importance, little progress has been made in its application, due to the difficulty of capturing and representing contextual information about users. This thesis details the development and evaluation of the contextual SERL search, designed to tackle some of the challenges associated with CIR from the World Wide Web. The contextual SERL search utilises a rich contextual model that exploits implicit and explicit data to modify queries to more accurately reflect the user’s interests as well as to continually build the user’s contextual profile and a shared contextual knowledge base. These profiles are used to filter results from a standard search engine to improve the relevance of the pages displayed to the user. The contextual SERL search has been tested in an observational study that has captured both qualitative and quantitative data about the ability of the framework to improve the user’s web search experience. A total of 30 subjects, with different levels of search experience, participated in the observational study experiment. The results demonstrate that when the contextual profile and the shared contextual knowledge base are used, the contextual SERL search improves search effectiveness, efficiency and subjective satisfaction. The effectiveness improves as subjects have actually entered fewer queries to reach the target information in comparison to the contemporary search engine. In the case of a particularly complex search task, the efficiency improves as subjects have browsed fewer hits, visited fewer URLs, made fewer clicks and have taken less time to reach the target information when compared to the contemporary search engine. Finally, subjects have expressed a higher degree of satisfaction on the quality of contextual support when using the shared contextual knowledge base in comparison to using their contextual profile. These results suggest that integration of a user’s contextual factors and information seeking behaviours are very important for successful development of the CIR framework. It is believed that this framework and other similar projects will help provide the basis for the next generation of contextual information retrieval from the Web.
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Hopfgartner, Frank. "Personalised video retrieval : application of implicit feedback and semantic user profiles". Thesis, University of Glasgow, 2010. http://theses.gla.ac.uk/2132/.
Testo completoAbstract (sommario):
A challenging problem in the user profiling domain is to create profiles of users of retrieval systems. This problem even exacerbates in the multimedia domain. Due to the Semantic Gap, the difference between low-level data representation of videos and the higher concepts users associate with videos, it is not trivial to understand the content of multimedia documents and to find other documents that the users might be interested in. A promising approach to ease this problem is to set multimedia documents into their semantic contexts. The semantic context can lead to a better understanding of the personal interests. Knowing the context of a video is useful for recommending users videos that match their information need. By exploiting these contexts, videos can also be linked to other, contextually related videos. From a user profiling point of view, these links can be of high value to recommend semantically related videos, hence creating a semantic-based user profile. This thesis introduces a semantic user profiling approach for news video retrieval, which exploits a generic ontology to put news stories into its context. Major challenges which inhibit the creation of such semantic user profiles are the identification of user's long-term interests and the adaptation of retrieval results based on these personal interests. Most personalisation services rely on users explicitly specifying preferences, a common approach in the text retrieval domain. By giving explicit feedback, users are forced to update their need, which can be problematic when their information need is vague. Furthermore, users tend not to provide enough feedback on which to base an adaptive retrieval algorithm. Deviating from the method of explicitly asking the user to rate the relevance of retrieval results, the use of implicit feedback techniques helps by learning user interests unobtrusively. The main advantage is that users are relieved from providing feedback. A disadvantage is that information gathered using implicit techniques is less accurate than information based on explicit feedback. In this thesis, we focus on three main research questions. First of all, we study whether implicit relevance feedback, which is provided while interacting with a video retrieval system, can be employed to bridge the Semantic Gap. We therefore first identify implicit indicators of relevance by analysing representative video retrieval interfaces. Studying whether these indicators can be exploited as implicit feedback within short retrieval sessions, we recommend video documents based on implicit actions performed by a community of users. Secondly, implicit relevance feedback is studied as potential source to build user profiles and hence to identify users' long-term interests in specific topics. This includes studying the identification of different aspects of interests and storing these interests in dynamic user profiles. Finally, we study how this feedback can be exploited to adapt retrieval results or to recommend related videos that match the users' interests. We analyse our research questions by performing both simulation-based and user-centred evaluation studies. The results suggest that implicit relevance feedback can be employed in the video domain and that semantic-based user profiles have the potential to improve video exploration.
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Maglaughlin, Kelly L., e Diane H. Sonnenwald. "User Perspectives on Relevance Criteria: A Comparison among Relevant, Partially Relevant, and Not-Relevant Judgments". Wiley Periodicals, Inc, 2002. http://hdl.handle.net/10150/105087.
Testo completoAbstract (sommario):
This study investigates the use of criteria to assess relevant, partially relevant and not relevant documents. Each study participant identified passages within 20 document representations that were used in making relevance judgments, judged each document representation as a whole to be relevant, partially relevant or not relevant to their information need, and explained their decisions in an interview. Analysis revealed 29 criteria, discussed positively and negatively, used by the participants when selecting passages that contributed or detracted from a document's relevance. These criteria can be grouped into 6 categories: author, abstract, content, full text, journal or publisher and personal. Results indicate that multiple criteria are used when making relevant, partially relevant and not relevant judgments. Additionally, most criteria can have both a positive or negative contribution to the relevance of a document. The criteria most frequently mentioned by study participants in this study was content, followed by criteria concerning the full text document. These findings may have implications for relevance feedback in information retrieval systems, suggesting that users give relevance feedback using multiple criteria and indicate positive and negative criteria contributions. Systems designers may want to focus on supporting content criteria followed by full text criteria as this may provide the greatest cost benefit.
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Sahle, Eskinder. "Development of a user interface for MARIAN and CODER systems". Master's thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-04272010-020142/.
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Heckner, Markus. "Tagging, rating, posting : studying forms of user contribution for web-based information management and information retrieval /". Boizenburg Hülsbusch, 2008. http://d-nb.info/992369916/04.
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Kim, Mihye Computer Science & Engineering Faculty of Engineering UNSW. "Document management and retrieval for specialised domains: an evolutionary user-based approach". Awarded by:University of New South Wales. School of Computer Science and Engineering, 2003. http://handle.unsw.edu.au/1959.4/19183.
Testo completoAbstract (sommario):
Browsing marked-up documents by traversing hyperlinks has become probably the most important means by which documents are accessed, both via the World Wide Web (WWW) and organisational Intranets. However, there is a pressing demand for document management and retrieval systems to deal appropriately with the massive number of documents available. There are two classes of solution: general search engines, whether for the WWW or an Intranet, which make little use of specific domain knowledge or hand-crafted specialised systems which are costly to build and maintain. The aim of this thesis was to develop a document management and retrieval system suitable for small communities as well as individuals in specialised domains on the Web. The aim was to allow users to easily create and maintain their own organisation of documents while ensuring continual improvement in the retrieval performance of the system as it evolves. The system developed is based on the free annotation of documents by users and is browsed using the concept lattice of Formal Concept Analysis (FCA). A number of annotation support tools were developed to aid the annotation process so that a suitable system evolved. Experiments were conducted in using the system to assist in finding staff and student home pages at the School of Computer Science and Engineering, University of New South Wales. Results indicated that the annotation tools provided a good level of assistance so that documents were easily organised and a lattice-based browsing structure that evolves in an ad hoc fashion provided good efficiency in retrieval performance. An interesting result suggested that although an established external taxonomy can be useful in proposing annotation terms, users appear to be very selective in their use of terms proposed. Results also supported the hypothesis that the concept lattice of FCA helped take users beyond a narrow search to find other useful documents. In general, lattice-based browsing was considered as a more helpful method than Boolean queries or hierarchical browsing for searching a specialised domain. We conclude that the concept lattice of Formal Concept Analysis, supported by annotation techniques is a useful way of supporting the flexible open management of documents required by individuals, small communities and in specialised domains. It seems likely that this approach can be readily integrated with other developments such as further improvements in search engines and the use of semantically marked-up documents, and provide a unique advantage in supporting autonomous management of documents by individuals and groups - in a way that is closely aligned with the autonomy of the WWW.
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Tabassum, Binte Jafar Jeniya. "Information Extraction From User Generated Noisy Texts". The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1606315356821532.
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Gao, Yang. "Pattern-based topic modelling and its application for information filtering and information retrieval". Thesis, Queensland University of Technology, 2015. https://eprints.qut.edu.au/83982/1/Yang_Gao_Thesis.pdf.
Testo completoAbstract (sommario):
This thesis targets on a challenging issue that is to enhance users' experience over massive and overloaded web information. The novel pattern-based topic model proposed in this thesis can generate high-quality multi-topic user interest models technically by incorporating statistical topic modelling and pattern mining. We have successfully applied the pattern-based topic model to both fields of information filtering and information retrieval. The success of the proposed model in finding the most relevant information to users mainly comes from its precisely semantic representations to represent documents and also accurate classification of the topics at both document level and collection level.
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Olivares, Ríos Ximena. "Large scale image retrieval base on user generated content". Doctoral thesis, Universitat Pompeu Fabra, 2011. http://hdl.handle.net/10803/22718.
Testo completoAbstract (sommario):
Los sistemas online para compartir fotos proporcionan una valiosa fuente de
contenidos generado por el usuario (UGC). La mayor a de los sistemas de re-
cuperaci on de im agenes Web utilizan las anotaciones textuales para rankear los
resultados, sin embargo estas anotaciones no s olo ilustran el contenido visual
de una imagen, sino que tambi en describen situaciones subjetivas, espaciales,
temporales y sociales, que complican la tarea de b usqueda basada en palabras
clave.
La investigaci on en esta tesis se centra en c omo mejorar la recuperaci on de
im agenes en sistemas de gran escala, es decir, la Web, combinando informaci on
proporcionada por los usuarios m as el contenido visual de las im agenes. En el
presente trabajo se exploran distintos tipos de UGC, tales como anotaciones de
texto, anotaciones visuales, y datos de click-through, as como diversas t ecnicas
para combinar esta informaci on con el objetivo de mejorar la recuperaci on de
im agenes usando informaci on visual.
En conclusi on, la investigaci on realizada en esta tesis se centra en la impor-
tancia de incluir la informaci on visual en distintas etapas de la recuperaci on
de contenido. Combinando informaci on visual con otras formas de UGC, es
posible mejorar signi cativamente el rendimiento de un sistema de recuperaci on
de im agenes y cambiar la experiencia del usuario en la b usqueda de contenidos
multimedia en la Web.Online photo sharing systems provide a valuable source of user generated content (UGC). Most Web image retrieval systems use textual annotations to rank the results, although these annotations do not only illustrate the visual content of an image, but also describe subjective, spatial, temporal, and social dimensions, complicating the task of keyword based search. The research in this thesis is focused on how to improve the retrieval of images in large scale context , i.e. the Web, using information provided by users combined with visual content from images. Di erent forms of UGC are explored, such as textual annotations, visual annotations, and click-through-data, as well as di erent techniques to combine these data to improve the retrieval of images using visual information. In conclusion, the research conducted in this thesis focuses on the impor- tance to include visual information into various steps of the retrieval of media content. Using visual information, in combination with various forms of UGC, can signi cantly improve the retrieval performance and alter the user experience when searching for multimedia content on the Web. 1
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Schultz, Leah Hastings Samantha K. "Image manipulation and user-supplied index terms". [Denton, Tex.] : University of North Texas, 2009. http://digital.library.unt.edu/permalink/meta-dc-9828.
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Ul, Haq Raza. "Hybrid Recommender System Towards User Satisfaction". Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/24218.
Testo completoAbstract (sommario):
An individual’s ability to locate the information they desire grows more slowly than the rate at which new information becomes available. Customers are constantly confronted with situations in which they have many options to choose from and need assistance exploring or narrowing down the possibilities. Recommender systems are one tool to help bridge this gap. There are various mechanisms being employed to create recommender systems, but the most common systems fall into two main classes: content-based and collaborative filtering systems. Content-based recommender systems match the textual information of a particular product with the textual information representing the interests of a customer. Collaborative filtering systems use patterns in customer ratings to make recommendations. Both types of recommender systems require significant data resources in the form of a customer’s ratings and product features; hence they are not able to generate high quality recommendations. Hybrid mechanisms have been used by researchers to improve the performance of recommender systems where one can integrate more than one mechanism to overcome the drawbacks of an individual system.
The hybrid approach proposed in this thesis is the integration of content and context-based with collaborative filtering, since these are the most successful and widely used mechanisms. This proposed approach will look into the integration of content and context data with rating data using a different mechanism that mainly focuses on boosting a customer’s trust in the recommender system. Researchers have been trying to improve system performance using hybrid approaches, but research is lacking on providing justifications for recommended products. Hence, the proposed approach will mainly focus on providing justifications for recommended products as this plays a crucial role in obtaining the satisfaction and trust of customers. A product’s features and a customer’s context attributes are used to provide justifications. In addition to this, the presentation mechanism needs to be very effective as it has been observed that customers trust more in a system when there are explanations on how the recommended products have been computed and presented. Finally, this proposed recommender system will allow the customer to interact with it in various ways to provide feedback on the recommendations and justifications. Overall, this integration will be very useful in achieving a stronger correlation between the customers and products. Experimental results clearly showed that the majority of the participants prefer to have recommendations with their justifications and they received valuable recommendations on which they could trust.
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McKnight, Cliff, Andrew Dillon e John Richardson. "A Comparison of linear and hypertext formats in information retrieval". Oxford: Intellect, 1990. http://hdl.handle.net/10150/105893.
Testo completoAbstract (sommario):
This item is not the definitive copy. Please use the following citation when referencing this material: McKnight, C., Dillon, A., and Richardson, J. (1990) A comparison of linear and hypertext formats in information retrieval. In R. McAleese and C. Green, Hypertext: state of the art, Oxford: Intellect, 10-19.
Abstract
An exploratory study is described in which the same text was presented to subjects in one of four formats, of which two were hypertext (TIES and Hypercard) and two were linear (Word Processor and paper). Subjects were required to use the text to answer 12 questions. Measurement was made of their time and accuracy and their movement through the document was recorded, in addition to a variety of subjective data being collected. Although there was no significant difference between conditions for task completion time, subjects performed more accurately with linear formats. The implications of these findings and the other data collected are discussed.
47
Daniels, P. J. "Developing the user modelling function of an intelligent interface for document retrieval systems". Thesis, City University London, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380648.
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Järvelin, Kalervo. "User charge estimation in numeric online databases a methodology /". Tampere : University of Tampere, 1986. http://catalog.hathitrust.org/api/volumes/oclc/18665006.html.
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Vogt, Karen Fay. "The use of technology in meeting science reform criteria: Can web-based instruction promote scientific literacy?" CSUSB ScholarWorks, 1999. https://scholarworks.lib.csusb.edu/etd-project/1861.
Testo completoAbstract (sommario):
Science educators are currently facing the challenge of reforming the practices of science education. Publications of various science and educational organizations have established new criteria for accomplishing this goal. The new goal of science educators is scientific literacy for all.
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Ma, Hongyan. "User-system coordination in unified probabilistic retrieval exploiting search logs to construct common ground /". Diss., Restricted to subscribing institutions, 2008. http://proquest.umi.com/pqdweb?did=1581426061&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.
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