Accession Number : AD0755935

Title :   Semantic Retrieval: A Method for Managing Narrative Information. (Technique and Experimental Evaluation).

Descriptive Note : Technical rept.,

Corporate Author : ANALYTICS INC JENKINTOWN PA

Personal Author(s) : Harris,Regina M.

Report Date : 15 SEP 1972

Pagination or Media Count : 186

Abstract : The development of a method to store and retrieve unstructured narrative data by semantically-sensitive techniques suitable for automation is presented. The technique utilizes semantic surrogates, called 'abstracts' of source data as the basis for indexing. Retrieval incorporates inferential techniques designed to identify data relevant to, but not rigidly specified by, a query. When a search locates a relevant abstract or logical chain of abstracts the corresponding sentences or messages are retrieved. The key to the abstraction scheme is a unique concept of information as a transformational process, wherein the existence of prior states of knowledge concerning 'entities' in the text is exploited. Sentences define transformations of characteristics of these entities. The abstraction process categorizes and indexes the transformations, and subsequent retrieval is based upon these indices, each compacted into only 200 bits of memory. (Author)

Descriptors :   (*INFORMATION RETRIEVAL, DATA PROCESSING), (*SEMANTICS, *DATA STORAGE SYSTEMS), AUTOMATION, ABSTRACTS, FEASIBILITY STUDIES

Subject Categories : Information Science

Distribution Statement : APPROVED FOR PUBLIC RELEASE