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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 581 for “"Information retrieval"”.
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Ontology driven information retrieval.
Ontology-driven information retrieval deals with the use of entities specified in domain ontologies to enhance search and browse. The entities or concepts of lightweight ontological resources are traditionally used to index resources in specialised domains. Indexing with concepts is often achieved …
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Efficient Private Information Retrieval
… can reveal significant and possibly sensitive information about her. Private Information Retrieval (PIR) algorithms can be leveraged for providing perfect privacy to users' queries, though at a restrictive computational cost. In this work, we consider today's highly distributed computing …
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Distributional Private Information Retrieval
A private-information-retrieval (PIR) scheme lets a client fetch a record from a remote database without revealing which record it has fetched. Classic PIR schemes treat all database records the same but, in practice, some database records are much more popular (i.e., commonly fetched) than others. …
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Character recognition and information retrieval
… are two technologies, character recognition and information retrieval, that are used for text processing. Character recognition translates text image data to a computer-coded format; information retrieval stores these data and provides efficient access to the text. The necessity of their eventual …
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Information Retrieval from Neurophysiological Signals
… towards user-centric music/movie content retrieval by exploiting brain signals. Secondly, we addressed one of the main issue of the applications of brain decoding algorithms. Generally, the performance of such algorithms suffers from the constraint of having few and noisy samples, which is …
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User-Centered Adaptive Information Retrieval
Information retrieval systems are critical for overcoming information overload. A major deficiency of existing retrieval systems is that they generally lack user modeling and are not adaptive to individual users. Personalization is expected to break this deficiency and significantly improve …
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Agent based personalized information retrieval
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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Just-in-time information retrieval
This thesis defines Just-In-Time Information Retrieval agents (JITIRs): a class of software agents that proactively present potentially valuable information based on a person's local context in an easily accessible yet non-intrusive manner. The research described experimentally demonstrates that …
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Table Understanding for Information Retrieval
This thesis proposes a novel approach for finding tables in text files containing a mixture of unstructured and structured text. Tables may be arbitrarily complex because the data in the tables may themselves be tables and because the grouping of data elements displayed in a table may be very …
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Applying Wikipedia to Interactive Information Retrieval
… opportunities to improve the interactivity of information retrieval systems beyond the ubiquitous search box. One idea is to use knowledge bases—e.g. controlled vocabularies, classification schemes, thesauri and ontologies—to organize, describe and navigate the information space. These …
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Concept Search: Semantics Enabled Information Retrieval
The goal of information retrieval (IR) is to map a natural language query, which specifies the user information needs, to a set of objects in a given collection, which meet these needs. Historically, there have been two major approaches to IR that we call syntactic IR and semantic IR. In syntactic …
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Hytexpros : a hypermedia information retrieval system
The Hypermedia information retrieval system makes use of the specific capabilities of hypermedia systems with information retrieval operations and provides new kind of information management tools. It combines both hypermedia and information retrieval to offer end-users the possibility of …
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Smart Search Engine For Information Retrieval
… project addresses the main research problem in information retrieval and semantic search. It proposes the smart search theory as new theory based on hypothesis that semantic meanings of a document can be described by a set of keywords. With two experiments designed and carried out in this …
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Probabilistic Score Propagation in Information Retrieval
… applications of this framework for improving retrieval accuracy in three different areas: ""Hypertext Retrieval"", ""Smoothing of Document Language Models"" and ""Cross-Language Information Retrieval"". The experiment results show that the score propagation framework provides a general …
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An Axiomatic Approach to Information Retrieval
… and studying more robust and effective retrieval functions, and provides a flexible mechanism to incorporate more information to further improve the performance through defining a set of additional constraints.
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A Specialized Computer for Information Retrieval
Made available in DSpace on 2014-12-10T20:13:44Z (GMT). No. of bitstreams: 1 7511634.pdf: 3589247 bytes, checksum: 62476785c69cfaabc596b692f474d6fd (MD5) Previous issue date: 1974
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Practical protocols for private information retrieval
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-05-01
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Mixed-Language Arabic- English Information Retrieval
This thesis attempts to address the problem of mixed querying in CLIR. It proposes mixed-language (language-aware) approaches in which mixed queries are used to retrieve most relevant documents, regardless of their languages. To achieve this goal, however, it is essential firstly to suppress the …
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