Search (6 results, page 1 of 1)

  • × author_ss:"Bookstein, A."
  • × year_i:[1970 TO 1980}
  1. Bookstein, A.: Relevance (1979) 0.00 
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    Type
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  2. Bookstein, A.; Swanson, D.R.: Probabilistic models for automatic indexing (1974) 0.00 
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  3. Bookstein, A.: Fuzzy requests : an approach to weighted Boolean searches (1979) 0.00 
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    Abstract
    This article concerns the problem of how to permit a patron tp represent the relatice importance of various index terms in a Boolean request while retaining the desirable properties of a Boolean system. The character of classical Boolean systems is reviewed and related to the notion of fuzzy sets. The fuzzy set concept then forms the basis of the concept of a fuzzy request in which weights are assigned to index terms. The properties of such a system are discussed, and it is shown that such systems retain the manipulability of traditional Boolena requests
    Type
    a
  4. Bookstein, A.: ¬The bibliometric distributions (1976) 0.00 
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    Abstract
    One of the most surprising findings in the information sciences is the recurrence of a small number of frequency distributions. In this paper, these distributions are described, and a point of view is adopted that allows us to understand them a being different versions of a single distribution. The empirical distributions are shown to be special cases of a single theoretic distribution. It is found that when random fluctuations are introduced, the distributions are not strongly influenced
    Type
    a
  5. Bookstein, A.; Swanson, D.R.: ¬A decision theoretic foundation for indexing (1975) 0.00 
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    Abstract
    The indexing of a document is among the most crucial steps in preparing that document for retrieval. The adequacy of the indexing determines the ability of the system to respond to patron requests. This paper discusses this process, and document retrieval in general, on the basis of formal decision theory. The basic theoretical approach taken is illustrated by means of a model of word occurrences in documents in the context of a model information system; both models are fully defined in this paper. Through the main purpose of this papers is to provide insights into a very complex process, formulae are developed that may prove to be of value for an automated operating system. The paper concludes with an interpretation of recall and precision curves as seen from the point of view of decision theory
    Type
    a
  6. Bookstein, A.; Cooper, W.: ¬A general mathematical model for information retrieval systems (1976) 0.00 
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    Abstract
    This paper presents a mathematical model of an information retrieval system thought to be general enough to serve as an abstract representation of most document and reference retrieval systems. The model is made up of four components that, in one form or another, appear in every functioning system. It is proved that the basic organization of documents that the system provides for a user on receipt of a request follows from the properties and interrelations of the four components. Each component is then discussed in turn and it is seen that much of the existing theory regarding information systems can be viewed as an elaboration of this model
    Type
    a

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