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Peer reviewedWilbur, W. John – Journal of the American Society for Information Science, 1992
Describes a procedure for information retrieval testing that is based on the comparison of statistically independent methods of retrieval applied to the same database. The probability ranking principle is discussed, the statistical meaning of relevance is examined, and the methodology is illustrated on a large database of MEDLINE records. (19…
Descriptors: Comparative Analysis, Databases, Information Retrieval, Mathematical Formulas
Peer reviewedWilbur, W. John – Journal of the American Society for Information Science, 1993
Presents a method of modeling the relevance relationship in information retrieval to answer the question of the theoretical limits of certain statistical methods. Hypergeometric probability distribution is used to construct an abstract model of a database of MEDLINE records, and results of tests of vector retrieval methods are reported. (28…
Descriptors: Automatic Indexing, Bayesian Statistics, Bibliographic Databases, Expert Systems
