Accession Number : ADA180237

Title :   Free Text versus Uncontrolled Vocabulary: A Performance Comparison,

Corporate Author : DEFENSE TECHNICAL INFORMATION CENTER ALEXANDRIA VA

Personal Author(s) : Lahr,Thomas F

PDF Url : ADA180237

Report Date : 24 Dec 1980

Pagination or Media Count : 22

Abstract : This study evaluates the retrieval effectiveness of the technical report database of the Defense RDT&E On-Line System when a free text generated index file is used instead of uncontrolled vocabulary. The study found that free text searching provides a viable alternative to the use of uncontrolled vocabulary, and that it can prove to be a valuable tool in any information retrieval system.

Descriptors :   *INFORMATION RETRIEVAL, *TEXT PROCESSING, INFORMATION SYSTEMS, VOCABULARY, COMPARISON, DATA BASES, ON LINE SYSTEMS, TECHNICAL INFORMATION CENTERS, DEPARTMENT OF DEFENSE, REPORTS, SUBJECT INDEXING

Subject Categories : Information Science

Distribution Statement : APPROVED FOR PUBLIC RELEASE