Accession Number : AD0428993


Title :   AN INVESTIGATION OF THE TECHNIQUES AND CONCEPTS OF INFORMATION RETRIEVAL.


Descriptive Note : Quarterly rept. no. 4, 1 Apr-30 June 63,


Corporate Author : FEDERAL ELECTRIC CORP PARAMUS NJ


Personal Author(s) : Harlow, Jacques


Report Date : 31 Jul 1963


Pagination or Media Count : 69


Abstract : Work in two of the four areas of capability described in the project task structure has been performed. Under input capabilities an extension of work on procedures for automatic assignment and the development of a probabilistic nonBoolean retrieval model has been continued. The work on non-Boolean retrieval is also relevant to the query capabilities subtasks concerned with the specification of scope and the relaxation of limitations on descriptions. Under processing capabilities there is no new progress to be reported on associative procedures, but extensive mathematical analysis has been continued on the problems of file organization and search. The analysis was extended to Markov chains. Under integrating capabilities the implicit interrelationships among the specialized studies have been reviewed, although there was no attempt to develop specific integrative measures; this work has been postponed in favor of extending the concepts in the specialized areas. (Author)


Descriptors :   *INFORMATION RETRIEVAL , *INFORMATION RETRIEVAL , SCIENTIFIC RESEARCH , COMPUTER LOGIC , DATA PROCESSING , INPUT OUTPUT DEVICES , MEASUREMENT , PERSONNEL MANAGEMENT , OPERATION


Distribution Statement : APPROVED FOR PUBLIC RELEASE