Дисертації з теми "Incomplete approaches"
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Nguyen, Yen Thi Hong. "Time-frequency distributions : approaches for incomplete non-stationary signals." Thesis, University of Leeds, 2018. http://etheses.whiterose.ac.uk/19681/.
Albore, Alexandre. "Translation-based approaches to automated planning with incomplete information and sensing." Doctoral thesis, Universitat Pompeu Fabra, 2012. http://hdl.handle.net/10803/78939.
La Planificación es la disciplina de Inteligencia Artificial que estudia los procesos de razonamiento necesarios para conseguir las acciones que logren un objetivo dado. En presencia de información incompleta, el problema de planificación puede ser modelado como una búsqueda en el espacio de estados de creencia, cada uno de ellos representando un conjunto de estados posibles. Este problema es costoso ya que el numero de estados de creencia puede ser exponencial en el número de estados, lo cual es exponencial en el número de variables del problema. El uso de buenas representaciónes de los estados y de heurísticas informadas resultan cruciales para escalar en este espacio de búsqueda. En esta tesis se presentan traducciones para planificación con información incompleta, que transforman el problema de búsqueda en el espacio de estados de creencia, en búsqueda en espacio de estados, donde cada nodo representa un estado de creencia. Hemos desarrollado herramientas para la generación de planes para el problema traducido, ya sea con percepción parcial o nula. A su vez, demostramos formalmente bajo qué circunstancias las traducciones son polinómicas, completas y correctas. La evaluación empírica remarca el valor de dichas traducciones
Villaverde, Michael. "Stochastic optimization approaches to pricing, hedging and investment in incomplete markets." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.616209.
Iddrisu, Abdul-Karim. "Sensitivity analysis approaches for incomplete longitudinal data in a multi-centre clinical trial." Doctoral thesis, Faculty of Science, 2019. http://hdl.handle.net/11427/31396.
Caliskan, Nilufer. "Asset Pricing Models: Stochastic Volatility And Information-based Approaches." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608213/index.pdf.
Comerford, Liam. "Artificial neural network approaches and compressive sensing techniques for stochastic process estimation and simulation subject to incomplete data." Thesis, University of Liverpool, 2015. http://livrepository.liverpool.ac.uk/2046540/.
Tran, Trong Hieu. "Méthodes d'optimisation hybrides pour des problèmes de routages avec profits." Electronic Thesis or Diss., Toulouse 3, 2023. http://www.theses.fr/2023TOU30367.
Combinatorial optimization is an essential branch of computer science and mathematical optimization that deals with problems involving a discrete and finite set of decision variables. In such problems, the main objective is to find an assignment that satisfies a set of specific constraints and optimizes a given objective function. One of the main challenges is that these problems can be hard to solve in practice. In many cases, incomplete methods are preferred to complete methods since the latter may have difficulties in solving large-scale problems within a limited amount of time. On the other hand, incomplete methods can quickly produce high-quality solutions, which is a critical point in numerous applications. In this thesis, we investigate hybrid approaches that enhance incomplete search by exploiting complete search techniques. For this, we deal with a concrete case study, which is the vehicle routing problem with profits. In particular, we aim to boost incomplete search algorithms by extracting some knowledge during the search process and reasoning with the knowledge acquired in the past. The core idea is two-fold: (i) to learn conflicting solutions (that violate some constraints or that are suboptimal) and exploit them to avoid reconsidering the same solutions and guide search, and (ii) to exploit good features of elite solutions in order to hopefully generate new solutions having a higher quality. Furthermore, we investigate the development of a generic framework by decomposing and exchanging information between sub-modules to efficiently solve complex routing problems possibly involving optional customers, multiple vehicles, multiple time windows, multiple side constraints, and/or time-dependent transition times. The effectiveness of the approaches proposed is shown by various experiments on both standard benchmarks (e.g., the Orienteering Problem and its variants) and real-life datasets from the aerospace domain (e.g., the Earth Observation Satellite scheduling problem), and possibly involving uncertain profits
Papalaskari, Mary-Angela. "Minimal consequence : a semantic approach to reasoning with incomplete information." Thesis, University of Edinburgh, 1988. http://hdl.handle.net/1842/19214.
Herrmann, Felix J., Deli Wang, Gilles Hennenfent, and Peyman P. Moghaddam. "Seismic data processing with curvelets: a multiscale and nonlinear approach." Society of Exploration Geophysicists, 2007. http://hdl.handle.net/2429/557.
Paparistodemo, Marios. "Multinomial lattices and a quadratic programming approach for optimal replication in incomplete markets." Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271650.
Maximin, Grégory. "Les formes organisationnelles hybrides dans le secteur des télécommunications et des nouvelles technologies." Thesis, Antilles, 2022. http://www.theses.fr/2022ANTI0734.
The aim of the thesis is to show what are the means and strategic and organizational processes the firms of the sectors highly intense in new IT and innovation use to cope with to asset specificity and to the dynamics of the globalisation of the economy. The New Institutional Economics (NIE) leads our work thanks to the conception of the firm used which is based essentially on a contractualist approach which uses the works of the transaction cost economics and of theory of the incomplete contracts; however other approaches of the firms are evocated in order to enrich the academical view of our thesis. Moreover, the notion of strategic alliance is very important for our work, and it allows us to operate an articulation between the concepts of Organization and the Market for put in the light some firm’s dynamics in a market economy. Furthermore, the thesis concerns the strategic alliances under two other following perspectives: the first one is the multinationalization of the innovative firms, and the second one concerns the organizational response that establish the strategic alliances to cope with the specificities of the innovative sectors. The game theory and the concept of Nash equilibrium can help us to model ou describe the dynamic of the firms belonging the sector of telecommunications. The dynamic of other innovative sectors is studied through the notion of strategic alliance. The influence of the decisions and the public policies concerning the telecommunication regulation and the impulse of the innovation is evocated too. The influence of public policies can be seen particularly concerning the competition when the public regulator allows in the innovative sectors the competing firms to cooperate in upstream (for example research and development joined). Some research and developments models are presented in the thesis. It is important to note that the thesis has empirical data highlighting the weight of the sectors highly intense in research and development and so showing the weight of the innovation in the economy. The geographical field covers by these data is international The thesis thanks to the notion of strategic alliance enables to retail the organizational processes and the behavioral strategies (models of game) strengthening the innovation, enabling to cope with to a strong asset specificity and explaining the firms’ responses in a globalized economy. We finish in providing the organizational forms the most adapted for cope with to the strong specificity of the sector of telecommunications. There are the firm (post-merger) and the relational joint venture concerning this latter we demonstrate that the presence of relational contracts enables to reduce the will to renege and is a protection against the contractual opportunism
Menon, R. "TRANSLATIONAL BIOINFORMATICS AND SYSTEMS BIOLOGY APPROACHES TO GENETIC AND TRANSCRIPTIONAL DATA INCOMPLEX HUMAN DISORDERS." Doctoral thesis, Università degli Studi di Milano, 2013. http://hdl.handle.net/2434/221054.
Rasch, Vibeke. "Unsafe abortion in Tanzania : an empathetic approach to improve post-abortion quality of care /." Stockholm, 2003. http://diss.kib.ki.se/2003/91-7349-554-9.
Gamble, Christopher Thomas. "A Bayesian chromosome painting approach to detect signals of incomplete positive selection in sequence data : applications to 1000 genomes." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:e1f3b484-59b9-4703-ae09-67079408c424.
Wan, Wei. "A New Approach to the Decomposition of Incompletely Specified Functions Based on Graph Coloring and Local Transformation and Its Application to FPGA Mapping." PDXScholar, 1992. https://pdxscholar.library.pdx.edu/open_access_etds/4698.
Samuel, John. "Feeding a data warehouse with data coming from web services. A mediation approach for the DaWeS prototype." Thesis, Clermont-Ferrand 2, 2014. http://www.theses.fr/2014CLF22493/document.
The role of data warehouse for business analytics cannot be undermined for any enterprise, irrespective of its size. But the growing dependence on web services has resulted in a situation where the enterprise data is managed by multiple autonomous and heterogeneous service providers. We present our approach and its associated prototype DaWeS [Samuel, 2014; Samuel and Rey, 2014; Samuel et al., 2014], a DAta warehouse fed with data coming from WEb Services to extract, transform and store enterprise data from web services and to build performance indicators from them (stored enterprise data) hiding from the end users the heterogeneity of the numerous underlying web services. Its ETL process is grounded on a mediation approach usually used in data integration. This enables DaWeS (i) to be fully configurable in a declarative manner only (XML, XSLT, SQL, datalog) and (ii) to make part of the warehouse schema dynamic so it can be easily updated. (i) and (ii) allow DaWeS managers to shift from development to administration when they want to connect to new web services or to update the APIs (Application programming interfaces) of already connected ones. The aim is to make DaWeS scalable and adaptable to smoothly face the ever-changing and growing web services offer. We point out the fact that this also enables DaWeS to be used with the vast majority of actual web service interfaces defined with basic technologies only (HTTP, REST, XML and JSON) and not with more advanced standards (WSDL, WADL, hRESTS or SAWSDL) since these more advanced standards are not widely used yet to describe real web services. In terms of applications, the aim is to allow a DaWeS administrator to provide to small and medium companies a service to store and query their business data coming from their usage of third-party services, without having to manage their own warehouse. In particular, DaWeS enables the easy design (as SQL Queries) of personalized performance indicators. We present in detail this mediation approach for ETL and the architecture of DaWeS. Besides its industrial purpose, working on building DaWeS brought forth further scientific challenges like the need for optimizing the number of web service API operation calls or handling incomplete information. We propose a bound on the number of calls to web services. This bound is a tool to compare future optimization techniques. We also present a heuristics to handle incomplete information
Wu, Chih-Hsueh, and 吳志學. "Incomplete Rank Data Analysis-Likelihood Approach." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/34089144293718157738.
國立臺北大學
統計學系
93
Ranking several items is very common in daily life and produces rank data. Complete rank data arise from a (randomized) complete block design. The block is decision-maker (respondent, voter). The decision-makers can be people, households, firms, judges, or any other decision making unit. Each decision-maker (respondent, voter) is asked to rank a set of items (candidates). However, a rank data set may be incomplete with missing responses. Incomplete rank data usually arise from (randomized) balanced, partial balanced or unbalanced incomplete block design. Incomplete rank data contain missing responses and missingness is a ubiquitous problem in the medical or social researches. In this paper, we develop a likelihood method to analyze incomplete rank data with missing responses. The proposed method combines the proportional hazard model and EM algorithm to estimate the relative probability that a certain item is selected as the first rank. In simulation studies, we compare the results of the analysis of incomplete rank data between the proportional hazard model and the proposed likelihood method. The results show the proposed method reasonably good parameter estimates, and gain few improvements in the mean square error (MSEs) of parameter estimates. The results also show that likelihood ratio test has lower type I error under null hypothesis of equal ranking and still achieve good power. The overall performance of equal ranking is better than that of unequal ranking. We provide an analysis of real data with missing responses. The data arise from that a coffee company conducted an unbalanced block design to determine consumers’ preference of various flavors added to their coffee. We show that the proposed method has smaller variance of parameter estimates than those of the missing data. Furthermore, the rank ordering of the real data based on the proposed likelihood method is the same as the proportional hazard model without considering the missing responses.
Su, Hsiu-Te, and 蘇修德. "A Robust Watermarking Approach by Using Balanced Incomplete Block Design." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/25871144098121461828.
國立臺北大學
通訊工程研究所
95
Digital watermarking is a kind of technique by which information can be embedded into digital contents. In recent years, digital contents are extensively used, especially over the Internet. Digital copyright protection thus becomes a more and more serious problem. Digital watermarking may be a good solution due to its robustness and invisibility. This study aims to present a new watermarking approach base on the balanced incomplete block designs (BIBD). The watermark is embedded into the high frequency wavelet coefficients of an original image. Characteristics of human visual system are used to control the watermark strength. At the receiver site, the original image is used to extract the embedded watermark, and then the mathematical structure of the BIBD is used to identify the copyright date. Robustness is achieved by utilizing the mathematical structure of the BIBD. Because of the invisibility and big capacity of information are both satisfy, this approach is adaptable to cover communication.
"Pricing and hedging derivative securities in incomplete markets : an e-arbitrage approach." Sloan School of Management, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/2673.
Cover title.
Includes bibliographical references (p. 57-60).
Partially supported by the MIT Laboratory for Financial Engineering and a Presidential Young Investigator Award with matching funds from Draper Laboratory. DDM-9158118
Suh, Joseph Che. "A study of translation strategies in Guillaume Oyono Mbia's plays." Thesis, 2005. http://hdl.handle.net/10500/1687.
Linguistics
D.Litt. et Phil. (Linguistics)
"A Bayesian Network Approach to Early Reliability Assessment of Complex Systems." Doctoral diss., 2016. http://hdl.handle.net/2286/R.I.38656.
Dissertation/Thesis
Doctoral Dissertation Industrial Engineering 2016
Hsin, Che-Wei, and 辛哲瑋. "A Test of judging the number one product in a Marketing Survey: A multinomial approach for Incomplete Rank Data." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/4jwd4b.
中原大學
應用數學研究所
93
One particular area of business activity that depends on detailed sampling activities is marketing.Decision on new product to market is made on the basis of sample survey data. Data are often obtained from a face-to-face survey. A person is asked to answer a survey question may or may not be able to rank products completely according to his/her experience. The more products in survey, the more incomplete ranks in data set. This proposal catorized the data into the complete rank data and the incomplete rank data and then applies the multinomial approach to obtain reasonable estimators for all possible ranks. Consequently, a test between the different ranks of 2 products is also provided using delta method to approximate such distribution.Finally, the baseline-Categorical logit model is introduced to see if this differences is changed corresponding the chang levels of the predicted variable.
Freitas, Mauro. "Personalized approach on a smart image search engine, handling default data." Master's thesis, 2014. http://hdl.handle.net/1822/37466.
Search engines are becoming a tool widely used these days, there are different examples like Google, Yahoo!, Bing and so on. Adjacent to these tools is the need to get the results closer to each one of the users. Is in this area that some work has been developed recently, which allowed users to take advantage of the information presented to them, with no randomness or a sort of generic factors. This process of bringing the user closer to the results is called Personalization. Personalization is a process that involves obtaining and storing information about users of a system, which will be used later as a way to adapt the information to present. This process is crucial in many situations where the filtering of content is a requirement, since we deal daily with large amounts of information and it is not always helpful. (Doman J., 2012) In this project, the importance of personalization will be evaluated in the context of intelligent image search, making a contribution to the project CLOUD9-SIS. So, it will be evaluated the information to be treated, how it will be treated and how it will appear. This evaluation will take into account also other examples of existing search engines. These concepts will be used later to integrate a new system of searching for images, capable of adapting its results depending on the preferences captured from user interactions. The usage of the images was only chosen because CLOUD9-SIS is intended to return images as a result, it was not developed or used any technique for image interpretation.
Os motores de busca estão a tornar-se uma ferramenta bastante utilizada nos dias de hoje, existindo diferentes exemplos, tais como Google, Yahoo!, Bing, etc. Adjacente a essas ferramentas surge a necessidade de aproximar cada vez mais os resultados produzidos a cada um dos utilizadores. É nesta área que tem sido desenvolvido algum trabalho recentemente, o que permitiu que os utilizadores, pudessem tirar o melhor proveito da informação que lhes é apresentada, não havendo apenas uma aleatoriedade ou factores de ordenação genéricos. A este processo de aproximação do utilizador aos resultados dá-se o nome de Personalização. A Personalização é um processo que consiste na obtenção e armazenamento de informações sobre os utilizadores de um sistema, para posteriormente serem utilizadas como forma de adequar a informação que se vai utilizar. Este processo é determinante em várias situações onde a filtragem dos conteúdos é um requisito, pois lidamos diariamente com grandes quantidades de informação e nem sempre esta é útil. Neste projecto, vai ser avaliada a preponderância da Personalização no contexto da pesquisa inteligente de imagens, dando um contributo ao projecto CLOUD9-SIS. Assim, será avaliada a informação a ser tratada, a forma como será tratada e como será apresentada. Esta avaliação terá em consideração também exemplos de outros motores de busca já existentes. Estes conceitos serão posteriormente utilizados para integrar um novo sistema de procura de imagens que seja capaz de adaptar os seus resultados, consoante as preferências que vão sendo retiradas das interacções do utilizador. O uso das imagens foi apenas escolhido porque o projecto CLOUD9-SIS é suposto retornar imagens como resultado, não foi desenvolvida nem utilizada nenhuma técnica de interpretação de imagens.