ERIC Number: ED031288
Record Type: RIE
Publication Date: 1969-Apr
Reference Count: N/A
The Construction of Retrieval Environments and Pseudo-Classifications Based on External Relevance.
Jackson, David M.
The idea of pseudo-classification based on external relevance is introduced and compared with the more usual classifications derived by associative techniques. A general model for an information retrieval system using term classification is described. The derivation of a set of operators, or perturbations, for adjusting pseudo-classification and preventing their deterioration is given for a particular match function conforming with this model. The use of pseudo-classifications both for the prediction of relevant documents and for the evaluation of retrieval systems with respect to their theoretical optimum is discussed. The concept of the improvability of a retrieval model with respect to its constituent submodels is introduced and elaborated upon. (Author)
Descriptors: Classification, Documentation, Evaluation, Information Retrieval, Relevance (Information Retrieval), Search Strategies
Clearinghouse for Federal Scientific and Technical Information, Springfield, Va. 22151 (PB 184 462, MF-$0.65; HC-$3.00)
Publication Type: N/A
Education Level: N/A
Sponsor: National Science Foundation, Washington, DC.
Authoring Institution: Ohio State Univ., Columbus. Computer and Information Science Research Center.