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Download full textMcGill, Michael – 1979
This study of ranking algorithms used in a Boolean environment is based on an evaluation of factors affecting document ranking by information retrieval systems. The algorithms were decomposed into term weighting schemes and similarity measures, representatively selected from those known to exist in information retrieval environments, before being…
Descriptors: Algorithms, Comparative Analysis, Data Processing, Databases
Hawkins, Donald T. – Online, 1989
Reviews some of the models used for pricing online information services and discusses some of the implications of these pricing algorithms. Topics discussed include online versus print pricing; charges for the retrieval process; charges for the retrieved information; telecommunications charges; and the pricing policies of Chemical Abstracts…
Descriptors: Algorithms, Cost Estimates, Database Producers, Databases
