Search (27 results, page 1 of 2)

MacKay, D.M.: Quantal aspects of information (1950) 0.01

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Theme: Information

Bar-Hillel, Y.; Carnap, R.: ¬An outline of a theory of semantic information (1953) 0.01

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Theme: Information

Miller, G.A.: ¬The magical number, seven plus or minus two : some limits on our capacity for processing information (1956) 0.01

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Theme: Information

Zemanek, H.: Elementare Informationstheorie (1959) 0.01

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LCSH: Information theory
Subject: Information theory
Theme: Information

Shera, J.H.: Pattern, structure, and conceptualization in classification for information retrieval (1957) 0.01

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Source: Proceedings of the International Study Conference on Classification for Information Retrieval, held at Beatrice Webb House, Dorking, England, 13.-17.5.1957

Joyce, T.; Needham, R.M.: ¬The thesaurus approach to information retrieval (1958) 0.01

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Footnote: Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgang Kaufmann 1997. S.15-20.

Mooers, C.N.: ¬A mathematical theory of language symbols in retrieval (1959) 0.00

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Source: Proceedings of the International Conference on Scientific Information

Taube, M.: Storage and retrieval of information by means of the association of ideas (1955) 0.00

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Menzel, H.: Planned and unplanned scientific communication (1959) 0.00

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Source: International Conference on Scientific Information: Proceedings

Luhn, H.P.: ¬A statistical approach to the mechanical encoding and searching of literary information (1957) 0.00

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Bristol, R.P.: Control of subject information : can it be mechanized? (1950) 0.00

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Merryman, J.H.: Tactics and terminology in information retrieval : a summary of recent work (1958) 0.00

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Bar-Hillel, Y.; Carnap, R.: ¬An outline of a theory of semantic information (1952) 0.00
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```
Abstract

In distinction to current Theory of Communication which treats amount of information as a measure of the statistical rarity of a message, a Theory of Semantic Information is outlined, in which the concept of information carried by a sentence within a given language system is treated as synonymous with the content of this sentence, normalized in a certain way, and the concept of amount of semantic information is explicated by various measures of this content, all based on logical probability functions ranging over the contents. Absolute and relative measures are distinguished, so are D-functions suitable for contexts where deductive reasoning alone is relevant and I-functions suitable for contexts where inductive reasoning is adequate. Of the two major types of amount of information investigated, the one, cont, is additive with respect to sentences whose contents are exclusive, the other, inf, with respect to sentences which are inductively independent. The latter turns out to be formally analogous to the customary information measure function. Various estimate functions of amount of information are investigated leading to generalized semantic correlates of concepts and theorems of current Communication Theory. A concept of semantic noise is tentatively defined, so are efficiency and redundancy of the conceptual framework of a language system. It is suggested that semantic information is a concept more readily applicable to psychological and other investigations than its communicational counterpart.

Theme

Information

Foskett, D.J.: ¬The construction of a faceted classification for a special subject (1959) 0.00

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Source: Proc. Int. Conf. on Scientific Information, Washington

Cole, P.F.: ¬The analysis of reference question records as a guide to the information requirements of scientists (1958) 0.00

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Farradane, J.: Classification and mechanical selection (1957) 0.00

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Source: Proceedings of the International Study Conference on Classification for Information Retrieval, held at Beatrice Webb House, Dorking, England, 13.-17.5.1957

Ranganathan, S.R.: Library classification as a discipline (1957) 0.00

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Source: Proceedings of the International Study Conference on Classification for Information Retrieval, held at Beatrice Webb House,Dorking, England, 13.-17.5.1957

Mills, J.: Classification of a subject field (1957) 0.00

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Source: Proceedings of the International Study Conference on Classification for Information Retrieval, held at Beatrice Webb House, Dorking, England, 13.-17.5.1957

Coates, E.J.: Notation in classification (1957) 0.00

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Source: Proceedings of the International Study Conference on Classification for Information Retrieval, held at Beatrice Webb House, Dorking, England, 13.-17.5.1957

Ball, N.T.: Contributions of classification to science (1957) 0.00

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Source: Proceedings of the International Study Conference on Classification for Information Retrieval, held at Beatrice Webb House, Dorking, England, 13.-17.5.1957

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