Dissertations / Theses on the topic 'Mathematics Abstracting and indexing'
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1
Moens, Marie-Francine. "Automatic indexing and abstracting of document texts /." Boston, Mass. [u.a.] : Kluwer Academic Publ, 2000. http://www.loc.gov/catdir/enhancements/fy0820/00020394-d.html.
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Martin, Russell Lewis. "Archival indexing : problems and issues." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26052.
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The last decade has seen an unprecedented flood of material coming into archival repositories. As a result, there is a great need for procedures which provide a high degree of intellectual control over records. One such procedure is the indexing of archival materials. An archival index provides access to a large number of name and subject terms, without being bound by the traditional archival structures dictated by provenance. This process has not traditionally been widely understood by archivists, but it is important to grasp the fundamental principles of archival indexing, as well as the problems and issues that follow. This is especially true in a period when methods of automated information processing have reached new levels of sophistication.
This thesis is an exploration of these problems and issues. The place of indexing in a complete system of archival description is established, and the process defended as a valid part of archival retrieval. The thesis also offers guidelines for conducting the actual indexing process, and making several basic decisions faced by archival indexers with regard to the implementation of indexing in an archival descriptive system. In addition, the merits of such alternative methods as controlled-vocabulary and uncontrolled-vocabulary indexing, and coordination of desired terms before and after index creation, are weighed, and the positive and negative aspects of certain recently-developed systems evaluated. The thesis concludes by stating ways in which archivists must re-evaluate the indexing process for it to be used effectively in the future.Arts, Faculty of
Library, Archival and Information Studies (SLAIS), School of
Graduate
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Chance, Patricia Belle. "An interdisciplinary comparison of master's thesis abstracts." CSUSB ScholarWorks, 2005. https://scholarworks.lib.csusb.edu/etd-project/2794.
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Explores different ways that organizational moves and other discourse elements such as hedging are reflected in graduate student research abstracts for theses, dissertations and research articles. Master's thesis abstracts from five disciplines at California State University, San Bernardino were analyzed. Rhetorical conventions in these texts that reflect the epistemological and social expectations of the writers' academic communities were explored. Results indicate that these abstracts use a variety of hedging patterns and many of the moves that have been described for published research articles.
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Gíslason, Donald Garth. "Computer-assisted retrospective periodical indexing in musicology : La Chronique Musicale as RIPMxix prototype." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/25412.
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The music periodical literature of the 19th century has largely remained unavailable to musical scholarship due to a lack of adequate indexing. While several indexing efforts have been attempted in the past century, that proposed
by the recently established Répertoire international de la presse musicale du dix-neuviéme siécle (RIPMxix) sets itself apart by its comprehensiveness
and its use of computer technology.
This thesis tests the new system by preparing a prototype RIPMxix Series A catalogue of a major 19th-century French music journal, La Chronique Musicale (1873-1876). The prototype is in five parts: 1) a Title Catalogue, or chronological checklist of the titles, authors and pagination of all sections in the journal; 2) an Iconography Appendix, listing the captions, dimensions and pagination of all iconography in the journal; 3) a List of Variants, giving alternate pagination references in copies of the journal held by selected major institutions; 4) a Keyword Index of important words contained in article titling; and 5) an Author Index.
The indexing of La Chronique Musicale was carried out according to the regulations established in the RIPMxix Series A Guidelines, incorporating minor improvements in presentation, and adjudicating certain indexing situations
not addressed in them. A data entry system was developed and the typescript catalogue was entered into computer file space.
Detailed formatting based on the general design presented in the RIPMxix Series A Guidelines was specified for the Title Catalogue, Iconography
Appendix and List of Variants. To produce the remaining portions of the prototype (viz., the Keyword and Author Indexes), design options were studied, specific designs adopted and detailed formatting established.
Production of the prototype involved the development of three computer programmes: a single programme for the Title Catalogue, Iconography Appendix
and List of Variants; a separate programme for the Keyword Index; and a third programme for the Author Index.
It is concluded that the title-derivative approach taken by the RIPMxix system is a valid one, and suggestions are made for further research.Arts, Faculty of
Music, School of
Graduate
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Jones, Paul Andrew. "Automatic abstracting and indexing of technical documents : an approach based on concept selection." Thesis, Lancaster University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282380.
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Schultz, Leah. "Image manipulation and user-supplied index terms." Thesis, University of North Texas, 2009. https://digital.library.unt.edu/ark:/67531/metadc9828/.
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This study investigates the relationships between the use of a zoom tool, the terms they supply to describe the image, and the type of image being viewed. Participants were assigned to two groups, one with access to the tool and one without, and were asked to supply terms to describe forty images, divided into four categories: landscape, portrait, news, and cityscape. The terms provided by participants were categorized according to models proposed in earlier image studies. Findings of the study suggest that there was not a significant difference in the number of terms supplied in relation to access to the tool, but a large variety in use of the tool was demonstrated by the participants. The study shows that there are differences in the level of meaning of the terms supplied in some of the models. The type of image being viewed was related to the number of zooms and relationships between the type of image and the number of terms supplied as well as their level of meaning in the various models from previous studies exist. The results of this study provide further insight into how people think about images and how the manipulation of those images may affect the terms they assign to describe images. The inclusion of these tools in search and retrieval scenarios may affect the outcome of the process and the more collection managers know about how people interact with images will improve their ability to provide access to the growing amount of pictorial information.
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Teng, Shyh Wei 1973. "Image indexing and retrieval based on vector quantization." Monash University, Gippsland School of Computing and Information Technology, 2003. http://arrow.monash.edu.au/hdl/1959.1/5764.
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stevenson, craig. "Ordinal indexing of the class of strictly singular operators." VCU Scholars Compass, 2009. http://scholarscompass.vcu.edu/etd/1779.
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The Schreier families are a collection of finite subsets of N and have been used to provide refinements of the following Banach space notions: unconditional basic sequences, convergent sequences, spreading model and strictly singular operators to name a few. We use the Schreier families to study subclasses of strictly singular operators on Banach spaces. We also provide a sufficient condition on the strictly singular operators implying every operator falls into one of these subclasses.
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Yoon, JungWon. "Improving Recall of Browsing Sets in Image Retrieval from a Semiotics Perspective." Thesis, University of North Texas, 2006. https://digital.library.unt.edu/ark:/67531/metadc5237/.
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The purpose of dissertation is to utilize connotative messages for enhancing image retrieval and browsing. By adopting semiotics as a theoretical tool, this study explores problems of image retrieval and proposes an image retrieval model. The semiotics approach conceptually demonstrates that: 1) a fundamental reason for the dissonance between retrieved images and user needs is representation of connotative messages, and 2) the image retrieval model which makes use of denotative index terms is able to facilitate users to browse connotatively related images effectively even when the users' needs are potentially expressed in the form of denotative query. Two experiments are performed for verifying the semiotic-based image retrieval model and evaluating the effectiveness of the model. As data sources, 5,199 records are collected from Artefacts Canada: Humanities by Canadian Heritage Information Network, and the candidate terms of connotation and denotation are extracted from Art & Architecture Thesaurus. The first experiment, by applying term association measures, verifies that the connotative messages of an image can be derived from denotative messages of the image. The second experiment reveals that the association thesaurus which is constructed based on the associations between connotation and denotation facilitates assigning connotative terms to image documents. In addition, the result of relevant judgments presents that the association thesaurus improves the relative recall of retrieved image documents as well as the relative recall of browsing sets. This study concludes that the association thesaurus indicating associations between connotation and denotation is able to improve the accessibility of the connotative messages. The results of the study are hoped to contribute to the conceptual knowledge of image retrieval by providing understandings of connotative messages within an image and to the practical design of image retrieval system by proposing an association thesaurus which can supplement the limitations of the current content-based image retrieval systems (CBIR).
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Stewart, Brian. "Pictures in words : indexing, folksonomy and representation of subject content in historic photographs." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2013. https://ro.ecu.edu.au/theses/687.
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Subject access to images is a major issue for image collections. Research is needed to understand how indexing and tagging contribute to make the subjects of historic photographs accessible.
This thesis firstly investigates the evidence of cognitive dissonance between indexers and users in the way they attribute subjects to historic photographs, and, secondly, how indexers and users might work together to enhance subject description. It analyses how current indexing and social tagging represent the subject content of historic photographs. It also suggests a practical way indexers can work with taggers to deal with the classic problem of resource constraints and to enhance metadata to make photo collections more accessible. In an original application of the Shatford/Panofsky classification matrix within the applications domain of historic images, patterns of subject attribution are explored between taggers and professional indexers.
The study was conducted in two stages. The first stage (Studies A to D) investigated how professional indexers and taggers represent the subject content of historic photographs and revealed differences based on Shatford/Panofsky. The indexers (Study A) demonstrated a propensity for specific and generic subjects and almost complete avoidance of abstracts. In contrast, a pilot study with users (Study B) and with baseline taggers (Studies C and D) showed their propensity for generics and equal inclination to specifics and abstracts. The evidence supports the conclusion that indexers and users approach the subject content of historic photographs differently, demonstrating cognitive dissonance, a conflict between how they appear to think about and interpret images.
The second stage (Study E) demonstrated that an online training intervention affected tagging behaviour. The intervention resulted in increased tagging and fuller representation of all subject facets according to the Shatford/Panofsky classification matrix. The evidence showed that trained taggers tagged more generic and abstract facets than untrained taggers. Importantly, this suggests that training supports the annotation of the higher levels of subject content and so potentially provides enhanced intellectual access.
The research demonstrated a practical way institutions can work with taggers to extend the representation of subject content in historic photographs. Improved subject description is critical for intellectual access and retrieval in the cultural heritage space. Through systematic application of the training method a richer corpus of descriptors might be created that enhances machine based information retrieval via automatic extraction.
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Kruger, Andries F. "Machine learning, data mining, and the World Wide Web : design of special-purpose search engines." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53492.
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Thesis (MSc)--Stellenbosch University, 2003.ENGLISH ABSTRACT: We present DEADLINER, a special-purpose search engine that indexes conference and workshop announcements, and which extracts a range of academic information from the Web. SVMs provide an efficient and highly accurate mechanism for obtaining relevant web documents. DEADLINER currently extracts speakers, locations (e.g. countries), dates, paper submission (and other) deadlines, topics, program committees, abstracts, and affiliations. Complex and detailed searches are possible on these fields. The niche search engine was constructed by employing a methodology for rapid implementation of specialised search engines. Bayesian integration of simple extractors provides this methodology, that avoids complex hand-tuned text extraction methods. The simple extractors exploit loose formatting and keyword conventions. The Bayesian framework further produces a search engine where each user can control each fields false alarm rate in an intuitive and rigorous fashion, thus providing easy-to-use metadata.
AFRIKAANSE OPSOMMING: Ons stel DEADLINER bekend: 'n soekmasjien wat konferensie en werkvergaderingsaankondigings katalogiseer en wat uiteindelik 'n wye reeks akademiese byeenkomsmateriaal sal monitor en onttrek uit die Web. DEAD LINER herken en onttrek tans sprekers, plekke (bv. landname), datums, o.a. sperdatums vir die inlewering van akademiese verrigtings, onderwerpe, programkomiteë, oorsigte of opsommings, en affiliasies. 'n Grondige soek is moontlik oor en deur hierdie velde. Die nissoekmasjien is gebou deur gebruik te maak van 'n metodologie vir die vinnige oprigting van spesialiteitsoekmasjiene. Die metodologie vermy komplekse instelling m.b.v. hande-arbeid van die teksuittreksels deur gebruik te maak van Bayesiese integrering van eenvoudige ontsluiters. Die ontsluiters buit dan styl- en gewoonte-sleutelwoorde uit. Die Bayesiese raamwerk skep hierdeur 'n soekmasjien wat gebruikers toelaat om elke veld se kans om verkeerd te kies op 'n intuïtiewe en deeglike manier te beheer.
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Vasireddy, Jhansi Lakshmi. "Applications of Linear Algebra to Information Retrieval." Digital Archive @ GSU, 2009. http://digitalarchive.gsu.edu/math_theses/71.
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Some of the theory of nonnegative matrices is first presented. The Perron-Frobenius theorem is highlighted. Some of the important linear algebraic methods of information retrieval are surveyed. Latent Semantic Indexing (LSI), which uses the singular value de-composition is discussed. The Hyper-Text Induced Topic Search (HITS) algorithm is next considered; here the power method for finding dominant eigenvectors is employed. Through the use of a theorem by Sinkohrn and Knopp, a modified HITS method is developed. Lastly, the PageRank algorithm is discussed. Numerical examples and MATLAB programs are also provided.
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Jolivet, Sébastien. "Modèle de description didactique de ressources d'apprentissage en mathématiques, pour l'indexation et des services EIAH." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAM074/document.
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Dans un contexte où les outils numériques et le WEB permettent la diffusion et le partage massif de ressources, le défi actuel est de trouver la bonne ressource au bon moment. Pour les ressources d’enseignement, les standards de description actuels (LOM ou ScoLOMFr par exemple) ne permettent pas une description des dimensions didactiques d’une ressource. Notre thèse est une contribution pour combler ce manque, en nous situant dans le domaine de environnements informatiques pour l’apprentissage humain (EIAH). Nous nous sommes particulièrement intéressé à la description de ressources de type « énoncé avec tâche prescrite » (ETP). Nous nous sommes placé dans le cadre de la théorie anthropologique du didactique (TAD) et avons en particulier exploité la formalisation de l’approche praxéologique proposée par le cadre T4TEL. Nous proposons quatre résultats principaux. Le premier est un modèle de description didactique de ressources (M2DR) de type ETP. Il permet la description d’un ETP sur la base de critères didactiques et de déterminer son adéquation avec un curriculum. Ce modèle est construit à partir de l’exploitation d’un modèle praxéologique de référence (MPR). Le deuxième résultat est la modélisation d’intentions didactiques, utilisées pour pouvoir chercher des ETP décrits à l’aide du modèle M2DR. Le troisième résultat est un enrichissement du cadre T4TEL, en définissant une modélisation de la tâche et en introduisant la notion de type de tâches optimum. Le quatrième résultat est la définition d’un processus de construction d’une représentation ontologique d’un MPR décrit dans T4TEL à l’aide de générateurs de types de tâches. Ce processus permet une utilisation du modèle dans un cadre informatisé. Il a été appliqué à différents MPR, dans les domaines de l’algèbre élémentaire et de la numération. Ceci a permis l’utilisation du modèle M2DR pour décrire différents ETPIn a context where digital tools and the WEB allow for the diffusion and massive sharing of resources, the current challenge is to find the right resource at the right time. Current description standards (e. g. LOM or ScoLOMFr) do not allow the description of the didactic dimensions of a learning object. Our thesis is a contribution to fill this gap from the Technology-Enhanced Learning (TEL) field point of view. We were particularly interested in the description of mathematics exercises. We conducted our work within the Anthropological Theory of Didactics (ATD) framework. More specifically, we have exploited the formalization of the praxeological approach proposed by the T4TEL framework. Our findings and propositions are four-fold. First, we proposed a didactic resource description model (M2DR) that allows the description of a mathematics exercises based on didactic criteria and determines its suitability for a curriculum. This model is based on the use of a reference epistemological model (REM). The second result is the modeling of didactic intentions, used for searching for mathematics exercises described with the M2DR model. The third result is an enhancement of the T4TEL framework defining a task model and introducing the notion of optimal types of tasks. The fourth result is the definition of a process for implementing an ontological representation of a REM described in T4TEL using types of tasks generators. This process allows the model to be used in a computerized environment. It has been applied to different REMs in the fields of elementary algebra and numeracy. That fostered the use of the M2DR model to describe different mathematics exercises
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Pacheco, Urubatan Rocha. "Análise de redes sociais em dados bibliográficos." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/275784.
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Orientador: Ricardo de Oliveira AnidoDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Computação
Made available in DSpace on 2018-08-17T02:21:18Z (GMT). No. of bitstreams: 1 Pacheco_UrubatanRocha_M.pdf: 1174940 bytes, checksum: d2b5f4af6749eb4a1c7c6a1810b9749a (MD5) Previous issue date: 2010
Resumo: O foco deste trabalho é viabilizar a análise estrutural em redes sociais de colaboração científica a partir de bases de dados bibliográficos. Os dados bibliográficos são utilizados para obter redes sociais de afiliação dos autores a instituições de pesquisa científica, e das publicações são extraídas as suas relações com ontologias de áreas de pesquisa. Foram estudados e aplicados métodos que utilizam a análise das redes sociais para solução/redução de ambiguidades em identidades de nomes de pesquisadores, instituições, e veículos científicos. Outro assunto estudado foi a abordagem de medida da qualidade dos resultados e os problemas que afetam a sua qualidade. Concretizando o objetivo deste trabalho, foram construídas métricas e ferramentas que permitem a comparação da produção científica entre instituições, departamentos, áreas de pesquisa, países, etc. As ferramentas também produziram um ranking de universidades baseado no prestígio dos pesquisadores destas universidades na rede social de co-autoria. Este resultado permitiu demonstrar que a informação estrutural de prestígio foi devidamente capturada ao correlacionar este ranking com outros que avaliam a qualidade da produção científica das universidades utilizando critérios semelhantes.
Abstract: This work performs social network analysis of the scientific collaborations extracted from bibliographic data bases. The analysis also includes the authors' scientific institution afiliation, and its relation with the main scientific publications and with research subject ontologies. We studied and applied methods that use social network analysis to solve or mitigate the problem of ambiguity in researchers' identities. We also applied the methods for ambiguity resolution for names of institutions, scientific meeting venues, country/state names, etc. Another study subject was measuring the quality of the results. Finally we developed metrics and implemented tools that allow the comparison of the scientific production of institutions, researcher groups, research subjects fields, countries, etc. The tools also produced a ranking of universities based on the prestige of these universities researchers at the co-authorship social network. These results demonstrated that prestige structural information was properly captured showing its correlation with other works that assess the quality of scientific production of universities using similar criteria.
Mestrado
Metodologia e Tecnicas da Computação
Mestre em Ciência da Computação
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Guilmart, Christophe. "Filtrage de segments informatifs dans des vidéos." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2011. http://tel.archives-ouvertes.fr/tel-00668307.
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Les travaux réalisés dans le cadre de cette thèse ont pour objectif d'extraire les différents segments informatifs au sein de séquences vidéo, plus particulièrement aériennes. L'interprétation manuelle de telles vidéos dans une optique de renseignement se heurte en effet au volume des données disponibles. Une assistance algorithmique fondée sur diverses modalités d'indexation est donc envisagée, dans l'objectif de repérer les "segments d'intérêt" et éviter un parcours intégral de la vidéo. Deux approches particulières ont été retenues et respectivement développées au sein de chaque partie. La partie 1 propose une utilisation des conditions de prise de vue (CPDV) comme modalités d'indexation. Une évaluation de la qualité image permet ainsi de filtrer les segments temporels de mauvaise qualité et donc inexploitables. La classification du mouvement image apparent directement lié au mouvement caméra, fournit une indexation de séquences vidéo en soulignant notamment les segments potentiels d'intérêt ou au contraire les segments difficiles présentant un mouvement très rapide ou oscillant. La partie 2 explore le contenu dynamique de la séquence vidéo, plus précisément la présence d'objets en mouvement. Une première approche locale en temps est présentée. Elle filtre les résultats d'une première classification par apprentissage supervisé en exploitant les informations de contexte, spatial puis sémantique. Différentes approches globales en temps sont par la suite explorées. De telles approches permettent de garantir la cohérence temporelle des résultats et réduire les fausses alarmes.
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Nicholson, Scott. "Indexing and Abstracting on the World Wide Web: An Examination of Six Web Databases." 1997. http://hdl.handle.net/10150/106226.
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Web databases, commonly known as search engines or web directories, are currently the most useful way to search the Internet. In this article, the author draws from library literature to develop a series of questions that can be used to analyze these web searching tools. Six popular web databases are analyzed using this method. Using this analysis, the author creates three categories for web databases and explores the most appropriate searches to perform with each. The work concludes with a proposal for the ideal web database.
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Bagheri, Saeid. "Temporal profile summarization and indexing for surveillance videos." Thesis, 2014. http://hdl.handle.net/1805/6180.
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Indiana University-Purdue University Indianapolis (IUPUI)Surveillance videos are recorded continually and the retrieval of such videos currently still relies on human operators. Automatic retrieval has not reached a satisfactory accuracy. As an intermediate representation, this work develops multiple original temporal profiles of video to convey accurate temporal information in the video while keeping certain spatial characteristics. These are effective methods to visualizes surveillance video contents efficiently in a 2D temporal image, suitable for indexing and retrieving a large video database. We are aiming to provide a compact index that is intuitive and preserves most of the information in the video in order to avoid browsing extensive video clips frame by frame. By considering some of the properties of static surveillance videos, we aim at accentuating the temporal dimension in our visualization. We have introduced our framework as three unique methods that visualize different aspects of a surveillance video, plus an extension to non-static surveillance videos. In our first method "Localized Temporal Profile", by knowing that most surveillance videos are monitoring specific locations, we try to emphasize the other dimension, time, in our solution. we focus on describing all the events only in critical locations of the video. In our next method "Multi-Position Temporal Profile", we generate an all-inclusive profile that covers all the events in the video field of view. In our last method "Motion Temporal Profile" we perform in-depth analysis of scene motion and try to handle targets with non-uniform, non-translational motion in our temporal profile. We then further extend our framework by loosening the constraint that the video is static and including cameras with smooth panning motion as such videos are widely used in practice. By performing motion analysis on the camera, we stabilize the camera to create a panorama-like effect for the video, allowing us to utilize all of the aforementioned methods. The resulting profiles allows temporal indexing to each video frame, and contains all spatial information in a continuous manner. It also shows the actions and progress of events in the temporal profile. Flexible browsing and effective manipulation of videos can be achieved using the resulting video profiles.
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Clark-Kraut, Karen Rebecca. "A spreadsheet-based decision model for the choice of indexing and abstracting data delivery option for academic libraries." Thesis, 1993. http://hdl.handle.net/10125/9535.
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Tsai, Chun-Yu. "Multimodal News Summarization, Tracking and Annotation Incorporating Tensor Analysis of Memes." Thesis, 2017. https://doi.org/10.7916/D8FF44N7.
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We demonstrate four novel multimodal methods for efficient video summarization and comprehensive cross-cultural news video understanding.
First, For video quick browsing, we demonstrate a multimedia event recounting system. Based on nine people-oriented design principles, it summarizes YouTube-like videos into short visual segments (812sec) and textual words (less than 10 terms). In the 2013 Trecvid Multimedia Event Recounting competition, this system placed first in recognition time efficiency, while remaining above average in description accuracy.
Secondly, we demonstrate the summarization of large amounts of online international news videos. In order to understand an international event such as Ebola virus, AirAsia Flight 8501 and Zika virus comprehensively, we present a novel and efficient constrained tensor factorization algorithm that first represents a video archive of multimedia news stories concerning a news event as a sparse tensor of order 4. The dimensions correspond to extracted visual memes, verbal tags, time periods, and cultures. The iterative algorithm approximately but accurately extracts coherent quad-clusters, each of which represents a significant summary of an important independent aspect of the news event. We give examples of quad-clusters extracted from tensors with at least 108 entries derived from international news coverage. We show the method is fast, can be tuned to give preferences to any subset of its four dimensions, and exceeds three existing methods in performance.
Thirdly, noting that the co-occurrence of visual memes and tags in our summarization result is sparse, we show how to model cross-cultural visual meme influence based on normalized PageRank, which more accurately captures the rates at which visual memes are reposted in a specified time period in a specified culture.
Lastly, we establish the correspondences of videos and text descriptions in different cultures by reliable visual cues, detect culture-specific tags for visual memes and then annotate videos in a cultural settings. Starting with any video with less text or no text in one culture (say, US), we select candidate annotations in the text of another culture (say, China) to annotate US video. Through analyzing the similarity of images annotated by those candidates, we can derive a set of proper tags from the viewpoints of another culture (China). We illustrate cultural-based annotation examples by segments of international news. We evaluate the generated tags by cross-cultural tag frequency, tag precision, and user studies.
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"ACTION: automatic classification for Chinese documents." Chinese University of Hong Kong, 1994. http://library.cuhk.edu.hk/record=b5895378.
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by Jacqueline, Wai-ting Wong.Thesis (M.Phil.)--Chinese University of Hong Kong, 1994.
Includes bibliographical references (p. 107-109).
Abstract --- p.i
Acknowledgement --- p.iii
List of Tables --- p.viii
List of Figures --- p.ix
Chapter 1 --- Introduction --- p.1
Chapter 2 --- Chinese Information Processing --- p.6
Chapter 2.1 --- Chinese Word Segmentation --- p.7
Chapter 2.1.1 --- Statistical Method --- p.8
Chapter 2.1.2 --- Probabilistic Method --- p.9
Chapter 2.1.3 --- Linguistic Method --- p.10
Chapter 2.2 --- Automatic Indexing --- p.10
Chapter 2.2.1 --- Title Indexing --- p.11
Chapter 2.2.2 --- Free-Text Searching --- p.11
Chapter 2.2.3 --- Citation Indexing --- p.12
Chapter 2.3 --- Information Retrieval Systems --- p.13
Chapter 2.3.1 --- Users' Assessment of IRS --- p.13
Chapter 2.4 --- Concluding Remarks --- p.15
Chapter 3 --- Survey on Classification --- p.16
Chapter 3.1 --- Text Classification --- p.17
Chapter 3.2 --- Survey on Classification Schemes --- p.18
Chapter 3.2.1 --- Commonly Used Classification Systems --- p.18
Chapter 3.2.2 --- Classification of Newspapers --- p.31
Chapter 3.3 --- Concluding Remarks --- p.37
Chapter 4 --- System Models and the ACTION Algorithm --- p.38
Chapter 4.1 --- Factors Affecting Systems Performance --- p.38
Chapter 4.1.1 --- Specificity --- p.39
Chapter 4.1.2 --- Exhaustivity --- p.40
Chapter 4.2 --- Assumptions and Scope --- p.42
Chapter 4.2.1 --- Assumptions --- p.42
Chapter 4.2.2 --- System Scope ´ؤ Data Flow Diagrams --- p.44
Chapter 4.3 --- System Models --- p.48
Chapter 4.3.1 --- Article --- p.48
Chapter 4.3.2 --- Matching Table --- p.49
Chapter 4.3.3 --- Forest --- p.51
Chapter 4.3.4 --- Matching --- p.53
Chapter 4.4 --- Classification Rules --- p.54
Chapter 4.5 --- The ACTION Algorithm --- p.56
Chapter 4.5.1 --- Algorithm Design Objectives --- p.56
Chapter 4.5.2 --- Measuring Node Significance --- p.56
Chapter 4.5.3 --- Pseudocodes --- p.61
Chapter 4.6 --- Concluding Remarks --- p.64
Chapter 5 --- Analysis of Results and Validation --- p.66
Chapter 5.1 --- Seeking for Exhaustivity Rather Than Specificity --- p.67
Chapter 5.1.1 --- The News Article --- p.67
Chapter 5.1.2 --- The Matching Results --- p.68
Chapter 5.1.3 --- The Keyword Values --- p.68
Chapter 5.1.4 --- Analysis of Classification Results --- p.71
Chapter 5.2 --- Catering for Hierarchical Relationships Between Classes and Subclasses --- p.72
Chapter 5.2.1 --- The News Article --- p.72
Chapter 5.2.2 --- The Matching Results --- p.73
Chapter 5.2.3 --- The Keyword Values --- p.74
Chapter 5.2.4 --- Analysis of Classification Results --- p.75
Chapter 5.3 --- A Representative With Zero Occurrence --- p.78
Chapter 5.3.1 --- The News Article --- p.78
Chapter 5.3.2 --- The Matching Results --- p.79
Chapter 5.3.3 --- The Keyword Values --- p.80
Chapter 5.3.4 --- Analysis of Classification Results --- p.81
Chapter 5.4 --- Statistical Analysis --- p.83
Chapter 5.4.1 --- Classification Results with Highest Occurrence Frequency --- p.83
Chapter 5.4.2 --- Classification Results with Zero Occurrence Frequency --- p.85
Chapter 5.4.3 --- Distribution of Classification Results on Level Numbers --- p.86
Chapter 5.5 --- Concluding Remarks --- p.87
Chapter 5.5.1 --- Advantageous Characteristics of ACTION --- p.88
Chapter 6 --- Conclusion --- p.93
Chapter 6.1 --- Perspectives in Document Representation --- p.93
Chapter 6.2 --- Classification Schemes --- p.95
Chapter 6.3 --- Classification System Model --- p.95
Chapter 6.4 --- The ACTION Algorithm --- p.96
Chapter 6.5 --- Advantageous Characteristics of the ACTION Algorithm --- p.96
Chapter 6.6 --- Testing and Validating the ACTION algorithm --- p.98
Chapter 6.7 --- Future Work --- p.99
Chapter 6.8 --- A Final Remark --- p.100
Chapter A --- System Models --- p.102
Chapter B --- Classification Rules --- p.104
Chapter C --- Node Significance Definitions --- p.105
References --- p.107
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Cai, Hongyuan. "Video anatomy : spatial-temporal video profile." Thesis, 2014. http://hdl.handle.net/1805/4832.
Full textAbstract:
Indiana University-Purdue University Indianapolis (IUPUI)A massive amount of videos are uploaded on video websites, smooth video browsing, editing, retrieval, and summarization are demanded. Most of the videos employ several types of camera operations for expanding field of view, emphasizing events, and expressing cinematic effect. To digest heterogeneous videos in video websites and databases, video clips are profiled to 2D image scroll containing both spatial and temporal information for video preview. The video profile is visually continuous, compact, scalable, and indexing to each frame. This work analyzes the camera kinematics including zoom, translation, and rotation, and categorize camera actions as their combinations. An automatic video summarization framework is proposed and developed. After conventional video clip segmentation and video segmentation for smooth camera operations, the global flow field under all camera actions has been investigated for profiling various types of video. A new algorithm has been designed to extract the major flow direction and convergence factor using condensed images. Then this work proposes a uniform scheme to segment video clips and sections, sample video volume across the major flow, compute flow convergence factor, in order to obtain an intrinsic scene space less influenced by the camera ego-motion. The motion blur technique has also been used to render dynamic targets in the profile. The resulting profile of video can be displayed in a video track to guide the access to video frames, help video editing, and facilitate the applications such as surveillance, visual archiving of environment, video retrieval, and online video preview.
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Azzam, Ibrahim Ahmed Aref. "Implicit Concept-based Image Indexing and Retrieval for Visual Information Systems." 2006. http://eprints.vu.edu.au/479/1/Implicit_Concept-based_Image.pdf.
Full textAbstract:
This thesis focuses on Implicit Concept-based Image Indexing and Retrieval (ICIIR), and the development of a novel method for the indexing and retrieval of images. Image indexing and retrieval using a concept-based approach involves extraction, modelling and indexing of image content information. Computer vision offers a variety of techniques for searching images in large collections. We propose a method, which involves the development of techniques to enable components of an image to be categorised on the basis of their relative importance within the image in combination with filtered representations. Our method concentrates on matching subparts of images, defined in a variety of ways, in order to find particular objects. The storage of images involves an implicit, rather than an explicit, indexing scheme. Retrieval of images will then be achieved by application of an algorithm based on this categorisation, which will allow relevant images to be identified and retrieved accurately and efficiently. We focus on Implicit Concept-based Image Indexing and Retrieval, using fuzzy expert systems, density measure, supporting factors, weights and other attributes of image components to identify and retrieve images.
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So, Wing Wah Simon. "Content-based image indexing and retrieval for visual information systems." Thesis, 2000. https://vuir.vu.edu.au/15318/.
Full textAbstract:
The dominance of visual data in recent times has made a fundamental change to our everyday life. Less than five to ten years ago, Internet and World Wide Web were not the daily vocabulary for the general public. But now, even a young child can use the Internet to search for information. This, however, does not mean that we have a mature technology to perform visual information search. On the contrary, visual information retrieval is still in its infancy. The problem lies on the semantic richness
and complexity of visual information in comparison to alphanumeric information.
In this thesis, we present new paradigms for content-based image indexing and retrieval for Visual Information Systems. The concept of Image Hashing and the developments of Composite Bitplane Signatures with Inverted Image Indexing and Compression are the main contributions to this dissertation. These paradigms are analogous to the signature-based indexing and inversion-based postings for text information retrieval. We formulate the problem of image retrieval as a two dimensional hashing as oppose to a one-dimensional hash vector used in conventional
hashing techniques. Wavelets are used to generate the bitplane signatures. The natural consequence to our bitplane signature scheme is the superimposed bitplane signatures for efficient retrieval. Composite bitplanes can then be used as the low-level feature information together with high-level semantic indexing to form a unified and
integrated framework in our inverted model for content-based image retrieval.
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Van, Deventer Martha Johanna. "Effektiwiteit van 'n interne ekserpjoernaal as deel van 'n aktualiteitsdiens aan die mynindustrie." Thesis, 2014. http://hdl.handle.net/10210/12280.
Full textAbstract:
M.Bibl. (Information Studies)Traditionally it is part of the library or information service to provide clients with access to current and relevant information through current awareness services. It is part of the information professional's task to apply new technology and necessary services to the advantage of the clients. The purpose of this study was to establish, by means of empirical research, the effectiveness of CoMIC - an abstracting journal service currently provided to the mining industry. Other institutions providing a similar abstracting journal service should be able to use this methodology as a basis when evaluating their own service. Both a literature survey (to gain basic information about current awareness services in general and more specifically abstracting journals) and a postal questionnaire (to establish clients' opinions about the CoMIC service) were used during the study. From the literature survey it was established that the use of an effective current awareness service holds a variety of advantages. There are however also a few problems associated with the provision of current awareness services. These problems are surpassable providing the necessary precautions are taken in time. The criteria to which abstracting journals are to adhere were established. The purpose of the questionnaire was to give clients the oportunity to express their personal views with regard to the CoMIC service. The most important information extrapolated from the questionnaire was that respondents were satisfied with most aspects of the service. Recommendations with regard to alleviating a few minor problems were provided. After an analysis of the research results, it was concluded that CoMIC should be classified as an effective abstracting journal service.
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Azzam, Ibrahim Ahmed Aref. "Implicit Concept-based Image Indexing and Retrieval for Visual Information Systems." Thesis, 2006. https://vuir.vu.edu.au/479/.
Full textAbstract:
This thesis focuses on Implicit Concept-based Image Indexing and Retrieval (ICIIR), and the development of a novel method for the indexing and retrieval of images. Image indexing and retrieval using a concept-based approach involves extraction, modelling and indexing of image content information. Computer vision offers a variety of techniques for searching images in large collections. We propose a method, which involves the development of techniques to enable components of an image to be categorised on the basis of their relative importance within the image in combination with filtered representations. Our method concentrates on matching subparts of images, defined in a variety of ways, in order to find particular objects. The storage of images involves an implicit, rather than an explicit, indexing scheme. Retrieval of images will then be achieved by application of an algorithm based on this categorisation, which will allow relevant images to be identified and retrieved accurately and efficiently. We focus on Implicit Concept-based Image Indexing and Retrieval, using fuzzy expert systems, density measure, supporting factors, weights and other attributes of image components to identify and retrieve images.