A COMPARATIVE EVALUATION OF STRUCTURED AND FREE TEXT SEARCHING OF THE NHTSA DATA BASE

A comparative evaluation of two computerized retrieval systems is given. The two systems operate on the same document collection, but one uses conventional thesaurus search terms for indexing and access to the collection in a batch mode, while the other is an interactive system that provides direct access to document abstracts to a set of user queries, and scoring the output according to a retrieval effectiveness measure. The results show that there is no significant difference between the retrieval effectiveness of the two systems. Secondary evaluation criteria dealing with human factors and systems aspect are also discussed. The analysis shows that the interactive system has considerable advantages over the batch mode system, especially in regard to user human factors.

  • Corporate Authors:

    Operating Systems, Incorporated

    18345 Ventura Boulevard
    Tarzana, CA  United States  91356

    National Highway Traffic Safety Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Publication Date: 1975-1

Media Info

  • Pagination: 77 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00091347
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: P-74-143 Final Rpt., HS-801-414
  • Contract Numbers: DOT-HS-251-2-444
  • Files: NTIS, USDOT
  • Created Date: Jul 15 1989 12:00AM