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Relevant bibliographies by topics / Distributed information retrieval / Dissertations / Theses

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Dissertations / Theses on the topic 'Distributed information retrieval'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Craswell, Nicholas Eric, and Nick Craswell@anu edu au. "Methods for Distributed Information Retrieval." The Australian National University. Faculty of Engineering and Information Technology, 2001. http://thesis.anu.edu.au./public/adt-ANU20020315.142540.

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Published methods for distributed information retrieval generally rely on cooperation from search servers. But most real servers, particularly the tens of thousands available on the Web, are not engineered for such cooperation. This means that the majority of methods proposed, and evaluated in simulated environments of homogeneous cooperating servers, are never applied in practice. ¶ This thesis introduces new methods for server selection and results merging. The methods do not require search servers to cooperate, yet are as effective as the best methods which do. Two large experiments evalua

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2

Powell, Allison L. "Database selection in distributed information retrieval a study of multi-collection information retrieval /." Full text, Acrobat Reader required, 2001. http://viva.lib.virginia.edu/etd/diss/SEAS/ComputerScience/2001/Powell/etd.pdf.

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3

Baumgarten, Christoph. "Probabilistic information retrieval in a distributed heterogeneous environment." Doctoral thesis, [S.l. : s.n.], 1999. http://deposit.ddb.de/cgi-bin/dokserv?idn=963555316.

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Baumgarten, Christoph. "Probabilistic information retrieval in a distributed heterogeneous environment." Doctoral thesis, Technische Universität Dresden, 1998. https://tud.qucosa.de/id/qucosa%3A24785.

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This thesis describes a probabilistic model for optimum information retrieval in a distributed heterogeneous environment. The model assumes the collection of documents offered by the environment to be hierarchically partitioned into subcollections. Documents as well as subcollections have to be indexed. At this indexing methods using different indexing vocabularies can be employed. A query provided by a user is answered in terms of a ranked list of documents. The model determines a procedure for ranking the documents that stems from the Probability Ranking Principle: For each subcollection the

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5

Yang, Hui. "Methodologies for information source selection under distributed information environments." Access electronically, 2005. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20060511.123303/index.html.

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6

Liu, Yang. "A resource aware distributed LSI algorithm for scalable information retrieval." Thesis, Brunel University, 2011. http://bura.brunel.ac.uk/handle/2438/5559.

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Latent Semantic Indexing (LSI) is one of the popular techniques in the information retrieval fields. Different from the traditional information retrieval techniques, LSI is not based on the keyword matching simply. It uses statistics and algebraic computations. Based on Singular Value Decomposition (SVD), the higher dimensional matrix is converted to a lower dimensional approximate matrix, of which the noises could be filtered. And also the issues of synonymy and polysemy in the traditional techniques can be overcome based on the investigations of the terms related with the documents. However,

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7

Fu, R. "The quality of probabilistic search in unstructured distributed information retrieval systems." Thesis, University College London (University of London), 2012. http://discovery.ucl.ac.uk/1370031/.

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Searching the web is critical to the Web's success. However, the frequency of searches together with the size of the index prohibit a single computer being able to cope with the computational load. Consequently, a variety of distributed architectures have been proposed. Commercial search engines such as Google, usually use an architecture where the the index is distributed but centrally managed over a number of disjoint partitions. This centralized architecture has a high capital and operating cost that presents a significant barrier preventing any new competitor from entering the search marke

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8

Schatz, Bruce Raymond. "Interactive retrieval in information spaces distributed across a wide-area network." Diss., The University of Arizona, 1991. http://hdl.handle.net/10150/185363.

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The potential to provide interactive data manipulation across high-speed nationwide networks is stimulating development of new database technology. An information space is a data model that can support rapid browsing of large amounts of information contained in a digital library physically distributed across many disparate sources. This dissertation discusses supporting interactive retrieval of objects inside an information space across the nationwide scientific network. Implementing such interactive retrieval requires designing caching policies that enable fetching requested objects into a lo

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9

Tran, Allen Quoc-Luan. "A network management facility for a fault-tolerant distributed information retrieval system." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0010/MQ53394.pdf.

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10

Macfarlane, Andrew. "Distributed inverted files and performance : a study of parallelism and data distribution methods in IR." Thesis, City University London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342722.

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11

Shokouhi, Milad, and milads@microsoft com. "Federated Text Retrieval from Independent Collections." RMIT University. Computer Science and Information Technology, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080521.151632.

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Federated information retrieval is a technique for searching multiple text collections simultaneously. Queries are submitted to a subset of collections that are most likely to return relevant answers. The results returned by selected collections are integrated and merged into a single list. Federated search is preferred over centralized search alternatives in many environments. For example, commercial search engines such as Google cannot index uncrawlable hidden web collections; federated information retrieval systems can search the contents of hidden web collections without crawling. In enter

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12

Scherle, Ryan. "Looking for a haystack selecting data sources in a distributed retrieval system /." [Bloomington, Ind.] : Indiana University, 2006. 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:3240033.

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Thesis (Ph.D.)--Indiana University, Dept. of Computer Science and Cognitive Science, 2006.<br>"Title from dissertation home page (viewed July 17, 2007)." Source: Dissertation Abstracts International, Volume: 67-10, Section: B, page: 5859. Advisers: David B. Leake; Michael Gasser.

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Al-Shakarchi, Ahmad. "Scalable audio processing across heterogeneous distributed resources : an investigation into distributed audio processing for Music Information Retrieval." Thesis, Cardiff University, 2013. http://orca.cf.ac.uk/47855/.

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Audio analysis algorithms and frameworks for Music Information Retrieval (MIR) are expanding rapidly, providing new ways to discover non-trivial information from audio sources, beyond that which can be ascertained from unreliable metadata such as ID3 tags. MIR is a broad field and many aspects of the algorithms and analysis components that are used are more accurate given a larger dataset for analysis, and often require extensive computational resources. This thesis investigates if, through the use of modern distributed computing techniques, it is possible to design an MIR system that is scala

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14

Stegmaier, Florian [Verfasser], and Harald [Akademischer Betreuer] Kosch. "Unified Retrieval in Distributed and Heterogeneous Multimedia Information Systems / Florian Stegmaier. Betreuer: Harald Kosch." Passau : Universitätsbibliothek der Universität Passau, 2014. http://d-nb.info/1053119267/34.

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15

Abusukhon, Ahmad Salameh. "An investigation into improving the load balance and query throughput of distributed information retrieval." Thesis, University of Bath, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.505715.

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16

Lu, Chengye. "Peer to peer English/Chinese cross-language information retrieval." Thesis, Queensland University of Technology, 2008. https://eprints.qut.edu.au/26444/1/Chengye_Lu_Thesis.pdf.

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Peer to peer systems have been widely used in the internet. However, most of the peer to peer information systems are still missing some of the important features, for example cross-language IR (Information Retrieval) and collection selection / fusion features. Cross-language IR is the state-of-art research area in IR research community. It has not been used in any real world IR systems yet. Cross-language IR has the ability to issue a query in one language and receive documents in other languages. In typical peer to peer environment, users are from multiple countries. Their collections are de

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Lu, Chengye. "Peer to peer English/Chinese cross-language information retrieval." Queensland University of Technology, 2008. http://eprints.qut.edu.au/26444/.

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Peer to peer systems have been widely used in the internet. However, most of the peer to peer information systems are still missing some of the important features, for example cross-language IR (Information Retrieval) and collection selection / fusion features. Cross-language IR is the state-of-art research area in IR research community. It has not been used in any real world IR systems yet. Cross-language IR has the ability to issue a query in one language and receive documents in other languages. In typical peer to peer environment, users are from multiple countries. Their collections are de

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18

Li, Xiaodong. "RDSS ; a reliable and efficient distributed storage system." Ohio University / OhioLINK, 2004. http://www.ohiolink.edu/etd/view.cgi?ohiou1103127547.

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19

Chilappagari, Sairam. "Role of web services for globally distributed information retrieval systems in a grid environment implementation and performance analysis of a prototype /." Fairfax, VA : George Mason University, 2008. http://hdl.handle.net/1920/3220.

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Thesis (M.S.)--George Mason University, 2008.<br>Vita: p. 108. Thesis director: J. Mark Pullen. Submitted in partial fulfillment of the requirements for the degree of Master of Science in Computer Science. Title from PDF t.p. (viewed Aug. 28, 2008). Includes bibliographical references (p. 101-107). Also issued in print.

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Petratos, Panagiotis. "A heuristic information retrieval study : an investigation of methods for enhanced searching of distributed data objects exploiting bidirectional relevance feedback." Thesis, University of Bedfordshire, 2004. http://hdl.handle.net/10547/319931.

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The primary aim of this research is to investigate methods of improving the effectiveness of current information retrieval systems. This aim can be achieved by accomplishing numerous supporting objectives. A foundational objective is to introduce a novel bidirectional, symmetrical fuzzy logic theory which may prove valuable to information retrieval, including internet searches of distributed data objects. A further objective is to design, implement and apply the novel theory to an experimental information retrieval system called ANACALYPSE, which automatically computes the relevance of a large

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21

Milliner, Stephen William. "Dynamic resolution of conceptual heterogenity in large scale distributed information systems." Thesis, Queensland University of Technology, 2001.

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22

Koch, Douglas J. "Positioning the Reserve Headquarters Support (RHS) system for multi-layered enterprise use." Thesis, Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Sep/09Sep%5FKoch.pdf.

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Thesis (M.S. in Information Technology Management)--Naval Postgraduate School, September 2009.<br>Thesis Advisor(s): Cook, Glenn. "September 2009." Description based on title screen as viewed on 6 November 2009. Author(s) subject terms: Enterprise architecture, project management, business process transformation, operating model, IT governance, IT systems, data quality, data migration, business operating model, personnel IT systems, HRM, ERP. Includes bibliographical references (p. 89-92). Also available in print.

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Miranda, Ackerman Eduardo Jacobo. "Extracting Causal Relations between News Topics from Distributed Sources." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-130066.

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The overwhelming amount of online news presents a challenge called news information overload. To mitigate this challenge we propose a system to generate a causal network of news topics. To extract this information from distributed news sources, a system called Forest was developed. Forest retrieves documents that potentially contain causal information regarding a news topic. The documents are processed at a sentence level to extract causal relations and news topic references, these are the phases used to refer to a news topic. Forest uses a machine learning approach to classify causal sentence

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Paques, Henrique Wiermann. "The Ginga Approach to Adaptive Query Processing in Large Distributed Systems." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/5277.

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Processing and optimizing ad-hoc and continual queries in an open environment with distributed, autonomous, and heterogeneous data servers (e.g., the Internet) pose several technical challenges. First, it is well known that optimized query execution plans constructed at compile time make some assumptions about the environment (e.g., network speed, data sources' availability). When such assumptions no longer hold at runtime, how can I guarantee the optimized execution of the query? Second, it is widely recognized that runtime adaptation is a complex and difficult task in terms of cost and benef

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Wang, Xinyu. "Toward Scalable Hierarchical Clustering and Co-clustering Methods : application to the Cluster Hypothesis in Information Retrieval." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSE2123/document.

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Comme une méthode d’apprentissage automatique non supervisé, la classification automatique est largement appliquée dans des tâches diverses. Différentes méthodes de la classification ont leurs caractéristiques uniques. La classification hiérarchique, par exemple, est capable de produire une structure binaire en forme d’arbre, appelée dendrogramme, qui illustre explicitement les interconnexions entre les instances de données. Le co-clustering, d’autre part, génère des co-clusters, contenant chacun un sous-ensemble d’instances de données et un sous-ensemble d’attributs de données. L’application

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Ducrou, Amanda Joanne. "Complete interoperability in healthcare technical, semantic and process interoperability through ontology mapping and distributed enterprise integration techniques /." Access electronically, 2009. http://ro.uow.edu.au/theses/3048.

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27

Osborn, Viola. "Identifying At-Risk Students: An Assessment Instrument for Distributed Learning Courses in Higher Education." Thesis, University of North Texas, 2000. https://digital.library.unt.edu/ark:/67531/metadc2457/.

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The current period of rapid technological change, particularly in the area of mediated communication, has combined with new philosophies of education and market forces to bring upheaval to the realm of higher education. Technical capabilities exceed our knowledge of whether expenditures on hardware and software lead to corresponding gains in student learning. Educators do not yet possess sophisticated assessments of what we may be gaining or losing as we widen the scope of distributed learning. The purpose of this study was not to draw sweeping conclusions with respect to the costs or benef

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Nguyen, The An Binh [Verfasser], Ralf [Akademischer Betreuer] Steinmetz, and Michael [Akademischer Betreuer] Zink. "Quality-aware Tasking in Mobile Opportunistic Networks - Distributed Information Retrieval and Processing utilizing Opportunistic Heterogeneous Resources. / The An Binh Nguyen ; Ralf Steinmetz, Michael Zink." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2018. http://d-nb.info/1167926331/34.

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Augusto, Luiz Daniel Creao. "Arquitetura e implementação de um sistema distribuído e recuperação de informação." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/45/45134/tde-12072010-110036/.

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A busca por documentos relevantes ao usuário é um problema que se torna mais custoso conforme as bases de conhecimento crescem em seu ritmo acelerado. Este problema passou a resolvido por sistemas distribuídos, devido a sua escalabilidade e tolerância a falhas. O desenvolvimento de sistemas voltados a estas enormes bases de conhecimento -- e a maior de todas, a Internet -- é uma indústria que movimenta bilhões de dólares por ano no mundo inteiro e criou gigantes. Neste trabalho, são apresentadas e discutidas estruturas de dados e arquiteturas distribuídas que tratem o problema de indexar e bu

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Ives, Zachary G. "Efficient query processing for data integration /." Thesis, Connect to this title online; UW restricted, 2002. http://hdl.handle.net/1773/6864.

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Brand, Jacobus Edwin. "An instrument analysis system based on a modern relational database and distributed software architecture." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53269.

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Thesis (MBA)--Stellenbosch University, 2003.<br>ENGLISH ABSTRACT: This document discusses the development of a personal computer based financial instrument analysis system, based on the information from a relatively old sequential file based data source. The aim is to modernise the system to use the latest software and data storage technology. The principles used for the design of the system are discussed in Chapter 2. Principles for the development of relational databases are discussed, where after the development of personal computer based software architecture is discussed, to explain the

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Vilsmaier, Christian. "Contextualized access to distributed and heterogeneous multimedia data sources." Thesis, Lyon, INSA, 2014. http://www.theses.fr/2014ISAL0094/document.

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Rendre les données multimédias disponibles en ligne devient moins cher et plus pratique sur une base quotidienne, par exemple par les utilisateurs eux-mêmes. Des phénomènes du Web comme Facebook, Twitter et Flickr bénéficient de cette évolution. Ces phénomènes et leur acceptation accrue conduisent à une multiplication du nombre d’images disponibles en ligne. La taille cumulée de ces images souvent publiques et donc consultables, est de l’ordre de plusieurs zettaoctets. L’exécution d’une requête de similarité sur de tels volumes est un défi que la communauté scientifique commence à cibler. Une

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Rametta, Corrado. "On Location-Awareness in P2P Wireless Mesh Community Networks." Doctoral thesis, Università di Catania, 2012. http://hdl.handle.net/10761/1093.

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Peer-to-Peer networks, due to their capacity of providing a good substrate for large scale contents-resources sharing and distribution applications, represent an interesting and promiscuous research area of the ICT and could play a key role in the diffusion of the mesh networking paradigm, meeting the growing need of communication and resource sharing among people anywhere and anytime. Extending the P2P paradigm to wireless networks presents several difficulties due to their dynamic, multi hop and often power and computational constrained nature. We provide some fundamental guidelines in desig

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Furno, Domenico. "Hybrid approaches based on computational intelligence and semantic web for distributed situation and context awareness." Doctoral thesis, Universita degli studi di Salerno, 2013. http://hdl.handle.net/10556/927.

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2011 - 2012<br>The research work focuses on Situation Awareness and Context Awareness topics. Specifically, Situation Awareness involves being aware of what is happening in the vicinity to understand how information, events, and one’s own actions will impact goals and objectives, both immediately and in the near future. Thus, Situation Awareness is especially important in application domains where the information flow can be quite high and poor decisions making may lead to serious consequences. On the other hand Context Awareness is considered a process to support user applications to a

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Domínguez, Sal David. "Analysis and optimization of question answering systems." Doctoral thesis, Universitat Politècnica de Catalunya, 2010. http://hdl.handle.net/10803/78011.

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Gerbier, Emilie. "Effet du type d’agencement temporel des répétitions d’une information sur la récupération explicite." Thesis, Lyon 2, 2011. http://www.theses.fr/2011LYO20029/document.

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La façon dont une information se répète au cours du temps a une influence sur la façon dont nous nous souviendrons de cette information. Les recherches en psychologie ont mis en évidence l’effet de pratique distribuée, selon lequel on retient mieux les informations qui se répètent avec des intervalles inter-répétitions longs que celles qui se répètent avec des intervalles courts. Nos travaux ont porté spécifiquement sur les situations où l’information se répète sur plusieurs jours, et nous avons comparé l’efficacité relative de différents types d’agencement temporel des répétitions. Un agencem

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Conte, Simone Ivan. "The Sea of Stuff : a model to manage shared mutable data in a distributed environment." Thesis, University of St Andrews, 2019. http://hdl.handle.net/10023/16827.

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Managing data is one of the main challenges in distributed systems and computer science in general. Data is created, shared, and managed across heterogeneous distributed systems of users, services, applications, and devices without a clear and comprehensive data model. This technological fragmentation and lack of a common data model result in a poor understanding of what data is, how it evolves over time, how it should be managed in a distributed system, and how it should be protected and shared. From a user perspective, for example, backing up data over multiple devices is a hard and error-pr

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Harvesf, Cyrus Mehrabaun. "The design and implementation of a robust, cost-conscious peer-to-peer lookup service." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26559.

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Thesis (Ph.D)--Electrical and Computer Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Blough, Douglas; Committee Member: Liu, Ling; Committee Member: Owen, Henry; Committee Member: Riley, George; Committee Member: Yalamanchili, Sudhakar. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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Thomas, Cerqueus. "Contributions au problème d'hétérogénéité sémantique dans les systèmes pair-à-pair : application à la recherche d'information." Phd thesis, Université de Nantes, 2012. http://tel.archives-ouvertes.fr/tel-00763914.

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Nous considérons des systèmes pair-à-pair (P2P) pour le partage de données dans lesquels chaque pair est libre de choisir l'ontologie qui correspond le mieux à ses besoins pour représenter ses données. Nous parlons alors d'hétérogénéité sémantique. Cette situation est un frein important à l'interopérabilité car les requêtes émises par les pairs peuvent être incomprises par d'autres. Dans un premier temps nous nous focalisons sur la notion d'hétérogénéité sémantique. Nous définissons un ensemble de mesures permettant de caractériser finement l'hétérogénéité d'un système suivant différentes face

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Villaça, Rodolfo da Silva 1974. "Hamming DHTe HCube : arquiteturas distribuídas para busca por similaridade." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/261007.

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Orientador: Maurício Ferreira Magalhães<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação<br>Made available in DSpace on 2018-08-23T11:36:13Z (GMT). No. of bitstreams: 1 Villaca_RodolfodaSilva_D.pdf: 2446951 bytes, checksum: c6d907cab0de18a43fe707cae0e827a4 (MD5) Previous issue date: 2013<br>Resumo: Atualmente, a quantidade de dados disponíveis na Internet supera a casa dos Zettabytes (ZB), definindo um cenário conhecido na literatura como Big Data. Embora as soluções de banco de dados tradicionais sejam eficientes na busca e recuperaçã

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REIS, JUNIOR JOSE S. B. "Métodos e softwares para análise da produção científica e detecção de frentes emergentes de pesquisa." reponame:Repositório Institucional do IPEN, 2015. http://repositorio.ipen.br:8080/xmlui/handle/123456789/26929.

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Submitted by Marco Antonio Oliveira da Silva (maosilva@ipen.br) on 2016-12-21T15:07:24Z No. of bitstreams: 0<br>Made available in DSpace on 2016-12-21T15:07:24Z (GMT). No. of bitstreams: 0<br>O progresso de projetos anteriores salientou a necessidade de tratar o problema dos softwares para detecção, a partir de bases de dados de publicações científicas, de tendências emergentes de pesquisa e desenvolvimento. Evidenciou-se a carência de aplicações computacionais eficientes dedicadas a este propósito, que são artigos de grande utilidade para um melhor planejamento de programas de pesquisa e des

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Duguépéroux, Joris. "Protection des travailleurs dans les plateformes de crowdsourcing : une perspective technique." Thesis, Rennes 1, 2020. http://www.theses.fr/2020REN1S023.

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Ce travail porte sur les moyens de protéger les travailleurs dans le cadre du crowdsourcing. Une première contribution s’intéresse à la protection de la vie privée des travailleurs pour une plateforme unique, tout en autorisant différents usages des données (pour affecter des tâches aux travailleurs ou pour avoir des statistiques sur la population par exemple). Une seconde contribution propose la mise à disposition d’outils, pour les législateurs, permettant de réguler de multiples plateformes en combinant à la fois transparence et respect de la vie privée. Ces deux approches font appel à de n

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Novaes, Tiago Fernandes de Athayde. "Processamento distribu?do da consulta espa?o textual top-k." Universidade Estadual de Feira de Santana, 2017. http://localhost:8080/tede/handle/tede/530.

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Submitted by Ricardo Cedraz Duque Moliterno (ricardo.moliterno@uefs.br) on 2017-11-28T21:38:06Z No. of bitstreams: 1 dissertacao-versao-final.pdf: 2717503 bytes, checksum: a1476bba65482b40daa1a139191ea912 (MD5)<br>Made available in DSpace on 2017-11-28T21:38:06Z (GMT). No. of bitstreams: 1 dissertacao-versao-final.pdf: 2717503 bytes, checksum: a1476bba65482b40daa1a139191ea912 (MD5) Previous issue date: 2017-07-17<br>With the popularization of databases containing objects with spatial and textual information (spatio-textual object), the interest in new queries and techniques for retrieving t

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Gaignard, Alban. "Partage et production de connaissances distribuées dans des plateformes scientifiques collaboratives." Phd thesis, Université de Nice Sophia-Antipolis, 2013. http://tel.archives-ouvertes.fr/tel-00827926.

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Cette thèse s'intéresse à la production et au partage cohérent de connaissances distribuées dans le domaine des sciences de la vie. Malgré l'augmentation constante des capacités de stockage et de calcul des infrastructures informatiques, les approches centralisées pour la gestion de grandes masses de données scientifiques multi-sources deviennent inadaptées pour plusieurs raisons: (i) elles ne garantissent pas l'autonomie des fournisseurs de données qui doivent conserver un certain contrôle sur les don- nées hébergées pour des raisons éthiques et/ou juridiques, (ii) elles ne permettent pas d'e

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Moin, Afshin. "Les Techniques De Recommandation Et De Visualisation Pour Les Données A Une Grande Echelle." Phd thesis, Université Rennes 1, 2012. http://tel.archives-ouvertes.fr/tel-00724121.

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Nous avons assisté au développement rapide de la technologie de l'information au cours de la dernière décennie. D'une part, la capacité du traitement et du stockage des appareils numériques est en constante augmentation grâce aux progrès des méthodes de construction. D'autre part, l'interaction entre ces dispositifs puissants a été rendue possible grâce à la technologie de réseautage. Une conséquence naturelle de ces progrès, est que le volume des données générées dans différentes applications a grandi à un rythme sans précédent. Désormais, nous sommes confrontés à de nouveaux défis pour trait

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Elofson, Gregg Steven. "Facilitating knowledge sharing in organizations: Semiautonomous agents that learn to gather, classify, and distribute environmental scanning knowledge." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184743.

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Evaluating patterns of indicators is often the first step an organization takes in scanning the environment. Not surprisingly, the experts that evaluate these patterns are not equally adept across all disciplines. While one expert is particularly skilled at recognizing the potential for political turmoil in a foreign nation, another is best at recognizing how Japanese government de-regulation is meant to complement the development of some new product. Moreover, the experts often benefit from one another's skills and knowledge in assessing activity in the environment external to the organizatio

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Lee, Chin Siong. "NPS AUV workbench: collaborative environment for autonomous underwater vehicles (AUV) mission planning and 3D visualization." Thesis, Monterey, California. Naval Postgraduate School, 2004. http://hdl.handle.net/10945/1658.

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Approved for public release, distribution is unlimited<br>alities. The extensible Markup Language (XML) is used for data storage and message exchange, Extensible 3D (X3D) Graphics for visualization and XML Schema-based Binary Compression (XSBC) for data compression. The AUV Workbench provides an intuitive cross-platform-capable tool with extensibility to provide for future enhancements such as agent-based control, asynchronous reporting and communication, loss-free message compression and built-in support for mission data archiving. This thesis also investigates the Jabber instant messaging pr

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El, Mahdaouy Abdelkader. "Accès à l'information dans les grandes collections textuelles en langue arabe." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAM091/document.

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Face à la quantité d'information textuelle disponible sur le web en langue arabe, le développement des Systèmes de Recherche d'Information (SRI) efficaces est devenu incontournable pour retrouver l'information pertinente. La plupart des SRIs actuels de la langue arabe reposent sur la représentation par sac de mots et l'indexation des documents et des requêtes est effectuée souvent par des mots bruts ou des racines. Ce qui conduit à plusieurs problèmes tels que l'ambigüité et la disparité des termes, etc.Dans ce travail de thèse, nous nous sommes intéressés à apporter des solutions aux problème

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Craswell, Nicholas Eric. "Methods for Distributed Information Retrieval." Phd thesis, 2000. http://hdl.handle.net/1885/46255.

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Published methods for distributed information retrieval generally rely on cooperation from search servers. But most real servers, particularly the tens of thousands available on the Web, are not engineered for such cooperation. This means that the majority of methods proposed, and evaluated in simulated environments of homogeneous cooperating servers, are never applied in practice. ¶ This thesis introduces new methods for server selection and results merging. The methods do not require search servers to cooperate, yet are as effective as the best methods which do. Two large experiments evaluat

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Viles, Charles L. "Maintaining retrieval effectiveness in distributed, dynamic information retrieval systems." 1996. http://books.google.com/books?id=g8rgAAAAMAAJ.

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