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Semantic information

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  • Clifford J. Maloney

Abstract

Efforts to devise a calculus adequate as a foundation for information retrieval have taken a number of forms. Semantic and signal information theory have in common the mathematical model consisting of an n‐dimensional Euclidean space. In semantic information theory, however, probability plays no part. What is of interest are those codes in which the transformed space is isomorphic to the original space under transformation and which preserve a “match” relation. Code transformations are applied separately to each document and query vector in the system, and those documents which match a given query vector before the transformation must do so afterwards. Query vectors are distinguished from document vectors by the inclusion of one or more “joker” symbols which match all codes in the given vector position. A major distinction between the communication and information retrieval context is shown in that, contrary to the former, shortened codes are only achieved at the cost of information in the latter.

Suggested Citation

  • Clifford J. Maloney, 1962. "Semantic information," American Documentation, Wiley Blackwell, vol. 13(3), pages 276-287, July.
    • Handle: RePEc:bla:amedoc:v:13:y:1962:i:3:p:276-287
    DOI: 10.1002/asi.5090130304
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