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Bibliography of papers on classification and allied subjects (1956) 0.01

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Mooers, C.N.: ¬A mathematical theory of language symbols in retrieval (1959) 0.01

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Source: Proceedings of the International Conference on Scientific Information

Menzel, H.: Planned and unplanned scientific communication (1959) 0.01

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Source: International Conference on Scientific Information: Proceedings

Merritt, L.C.: ¬A footnote on the need for local subject cataloging (1952) 0.01

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Hitchcock, J.E.: Objective subjectivity : four-year report on starred subject cards (1959) 0.01

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Foskett, D.J.: ¬The construction of a faceted classification for a special subject (1959) 0.01

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

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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Farradane, J.: Classification and mechanical selection (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

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

Mills, J.: Classification of a subject field (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

Coates, E.J.: Notation in classification (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

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

Grolier, E. de: Concluding survey (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

Foskett, D.J.: Occupational safety and health documents classification scheme (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

Walker, R.S.: Problem child : some observations on fiction, with a sketch of a new system of classification (1958) 0.01

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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

Dyson, G.M.: Advances in classification (1955) 0.01

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Abstract: My paper this evening will be chiefly concerned with problems relating to chemical data and to data which relate to subjects on the fringe of chemical science

Vickery, B.C.: Relations between subject fields : problems of constructing a general classification (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

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.

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