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Retrieving records from a gigabyte of text on a minicomputer using statistical ranking

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  • Donna Harman
  • Gerald Candela

Abstract

Statistically based ranked retrieval of records using keywords provides many advantages over traditional Boolean retrieval methods, especially for end users. This approach to retrieval, however, has not seen widespread use in large operational retrieval systems. To show the feasibility of this retrieval methodology, research was done to produce very fast search techniques using these ranking algorithms, and then to test the results against large databases with many end users. The results show not only response times on the order of 1 and 1/2 seconds for 806 megabytes of text, but also very favorable user reaction. Novice users were able to consistently obtain good search results after 5 minutes of training. Additional work was done to devise new indexing techniques to create inverted files for large databases using a minicomputer. These techniques use no sorting, require a working space of only about 20% of the size of the input text, and produce indices that are about 14% of the input text size. © 1990 John Wiley & Sons, Inc.

Suggested Citation

  • Donna Harman & Gerald Candela, 1990. "Retrieving records from a gigabyte of text on a minicomputer using statistical ranking," Journal of the American Society for Information Science, Association for Information Science & Technology, vol. 41(8), pages 581-589, December.
    • Handle: RePEc:bla:jamest:v:41:y:1990:i:8:p:581-589
    DOI: 10.1002/(SICI)1097-4571(199012)41:83.0.CO;2-U
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    Cited by:

    1. Albert Link & Brent Rowe & Dallas Wood, 2011. "Information About Information: Public Investments in Information Retrieval Research," Journal of the Knowledge Economy, Springer;Portland International Center for Management of Engineering and Technology (PICMET), vol. 2(2), pages 192-200, June.

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