Accession Number:

AD0656340

Title:

EFFECTIVENESS OF INFORMATION RETRIEVAL METHODS

Descriptive Note:

Corporate Author:

BOLT BERANEK AND NEWMAN INC CAMBRIDGE MA

Personal Author(s):

• Swets, John A.

Report Date:

1967-06-15

Pagination or Media Count:

52.0

Abstract:

Results of some fifty different retrieval methods applied in three experimental retrieval systems were subjected to the analysis suggested by statistical decision theory. The analysis validates a previously-proposed measure of effectiveness and demonstrates its several desirable properties. The examination of a wide range of data in relation to this one metric provides a clear and general assessment of the current state of the retrieval art, and shows that the art is still far from what might be considered a desirable state.

Descriptors:

• *STATE OF THE ART
• MATHEMATICAL MODELS
• REPORTS
• DECISION THEORY
• DOCUMENTS
• INDEXES
• STATISTICAL ANALYSIS
• EXPONENTIAL FUNCTIONS

Subject Categories:

• Information Science
• Statistics and Probability

Distribution Statement:

APPROVED FOR PUBLIC RELEASE