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Jaccard Similarity Leads to the Marczewski-Steinhaus Topology for Information Retrieval.
Peer reviewed Peer reviewed
Rousseau, Ronald – Information Processing & Management, 1998
Demonstrates that if the similarity function of a retrieval system leads to a (pseudo-) metric, the retrieval, similarity and Everett-Cater metric topology coincide and are different from the discrete topology; this is the case if documents are represented by lists, using the Jaccard similarity measure. The corresponding metric is the…
Descriptors: Computer System Design, Document Delivery, Information Retrieval, Information Seeking
Expert System Quality Control.
Peer reviewed Peer reviewed
Raggad, Bel Gacem – Information Processing & Management, 1996
A consultation quality control model (CQCM) developed for an expert system (ES) integrated both ES performance measures and end-user judgment values. Simple decision theory concepts were used to design the CQCM. Results show end users belong to different categories characterized by utility functions and the weights they assign to ES consultation…
Descriptors: Computer System Design, Decision Making, Expert Systems, Information Processing
Automated Assistance in the Formulation of Search Statements for Bibliographic Databases.
Peer reviewed Peer reviewed
Oakes, Michael P.; Taylor, Malcolm J. – Information Processing & Management, 1998
Reports on the design of an automated query system to help pharmacologists access the Derwent Drug File (DDF). Topics include knowledge types; knowledge representation; role of the search intermediary; vocabulary selection, thesaurus, and user input in natural language; browsing; evaluation methods; and search statement generation for the World…
Descriptors: Bibliographic Databases, Computer System Design, Evaluation Methods, Knowledge Representation