Search (4 results, page 1 of 1)

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Abstract

Describes an approach to the design and implementation of an information retrieval system capable of providing an optimal search for each individual user. On the basis of the properties of information need, analyzes the pecularities of optimal searching in documentary information retrieval systems. Considers the problems arising from implementing optimal searching and proposes concrete solutions to some of these problems. Describes a simple and convenient methods of selecting the 'best result' and proposes an algorithm for organizing optimal searching for selective dissemination of information (SDI). This algorithm can be used, without substantial modification, in many systems capable of using different searching methods

Source

Journal of information science. 22(1996) no.3, S.181-191

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Abstract

Most of the operational information retrieval (IR) systems in existence today use Boolean logic during search. Such systems are usually called Boolean IR systems. These systems, as any other IR systems, are not perfect and the problem of their development (and hence providing better quality service for real users) is one of the most important problems in information science. From this viewpoint, the article analyzes existing criticisms of operational systems and points out some of their positive features. At the same time, certain negative effects which hinder the development of existing systems are considered. Finally, the article provides several conclusions about using Boolean logic in developing multiversion IR systems

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Abstract

The emergence of information retrieval systems as a means of satisfying information needs has resulted in a large number of theoretical and practical ideas being introduced. These advancements provide the foundation for the theory of IR systems detailed in this book. Attention is also focused on the other areas of information science and how these differing theories interact and rely on each other. The book details algorithms in each process in the system, including those that are radically new in the retrieval process and those that are adaptable to the individual. New apporaches to evaluating information retrieval studying their performance are included

Content

The system and the systems approach - Vital activities and needs - Information crisis - Concept on an information retrieval system - Information retrieval language - Automatic indexing of documents - Automatic indexing of search requests - Storage and access to information - Control and feedback in IR systems - Evaluation of search results - Evaluation of macroevaluated objects - Some directions in the development of IR systems

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Abstract

Addresses the problem of control in documentary information retrieval systems is analysed and it is shown why an IR system has to be looked at as an adaptive system. The algorithms of feedback are proposed and it is shown how they depend on the type of the collection of documents: static (no change in the collection between searches) and dynamic (when the change occurs between searches). The proposed algorithms are the basis for the development of the fully automated information retrieval systems