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ERIC Number: ED017290
Record Type: RIE
Publication Date: 1967-Jun-15
Pages: 1
Abstractor: N/A
Reference Count: N/A
ISBN: N/A
ISSN: N/A
EFFECTIVENESS OF INFORMATION RETRIEVAL METHODS.
SWETS, JOHN A.
RESULTS OF FIFTY DIFFERENT RETRIEVAL METHODS AS APPLIED IN THREE EXPERIMENTAL RETRIEVAL SYSTEMS WERE SUBJECTED TO AN ANALYSIS SUGGESTED BY STATISTICAL DECISION THEORY. THE ANALYSIS USES A PREVIOUSLY-PROPOSED MEASURE OF EFFECTIVENESS AND DEMONSTRATES ITS SEVERAL PROPERTIES. SOME OF THESE PROPERTIES ARE--(1) IT ENABLES THE RETRIEVAL SYSTEM TO DISTINGUISH BETWEEN WANTED AND UNWANTED ITEMS. (2) IT IS NOT CONFOUNDED BY THE RELATIVE WILLINGNESS OF THE SYSTEM TO OMIT ITEMS, (3) IT IS A SINGLE NUMBER, AND (4) IT ALLOWS THE COMPLETE ORDERING OF DIFFERENT PERFORMANCES. THE EXAMINATION OF A WIDE RANGE OF DATA IN RELATION TO THIS ONE MEASURE ALSO PROVIDES A GENERAL ASSESSMENT OF THE CURRENT STATE OF THE RETRIEVAL ART. THIS DOCUMENT IS AVAILABLE AS AD-656-340 FROM THE CLEARINGHOUSE FOR FEDERAL SCIENTIFIC AND TECHNICAL INFORMATION, SPRINGFIELD, VIRGINIA, 22151, $3.00 FOR HARD COPY, $0.65 FOR MICROFICHE, 52 PAGES. (AUTHOR/CM)
Publication Type: N/A
Education Level: N/A
Audience: N/A
Language: N/A
Sponsor: N/A
Authoring Institution: Bolt, Beranek and Newman, Inc., Cambridge, MA.
Identifiers: N/A