Accession Number : AD0137471

Title :   FINAL REPT. (AND) ANNOTATED LIST OF TECHNICAL REPORTS PREPARED AND SUBMITTED TO THE OFFICE OF NAVAL RESEARCH

Corporate Author : DOCUMENTATION INC BETHESDA MD

Personal Author(s) : TAUBE, MORTIMER

Report Date : DEC 1956

Pagination or Media Count : 1

Abstract : An analysis was made of a new concept of relationships between the terms, classes, or ideas in an information system. The logic of association was worked out, and an attempt was made to construct a device which uses light to indicate the coincidence of items associated with the terms with which the search began. The optical device demonstrated the feasibility of combining an indexing system and an association system. An attempt was made to resolve its limitations with a new electronic device called EDIAC (AD-95 931). Work on storage and retrieval theory was continued. The coding requirements and the general problems of estimating the efficiency of storage and retrieval systems were studied. Tables of dropping fractions (noise) for superimposed data storage were prepared (AD-111 261). A good theory of imformation storage and retrieval was not realized. Considerations to be embodied in such a theory include the size of the system and code, number of ways the stored data are to be indexed for search, types of logical processes involved in the questions, role of redundancy and its relation to noise, degrees of freedom of the system, and the kinds of constraints that are imposed by (1) choice of the physical embodiment for the system, (2) choice of questions to be asked of the materials to be searched, and (3) time and sequence limitations. Short descriptive abstracts are given of the 16 individual technical reports which were issued during this period and which together describe the effort.

Descriptors :   *DOCUMENTS, *REPORTS, ANALYSIS, BIBLIOGRAPHIES, INDEXES.

Distribution Statement : APPROVED FOR PUBLIC RELEASE