Proposes an information retrieval system based on a hybrid model consisting of an inductive learning and neural network system. Evaluates the system's responses to incomplete queries and inconsistent indexing. Query terms, discriminant descriptors, and the American Documentation Institute's query and document titles used in the evaluation are…

Discusses impact of three selected command language facilities (positional or free text operations, crossfile searching, term frequency analysis--ZOOM) on the man-system interface in relation to operational online information retrieval (IR). A cognitive IR model, searchers' knowledge structures, and searching with different types of command…

This second volume of the two-part project report describes the indexing system, developed by the research team and cooperating subject experts, designed to provide access to the literature in the field of educational sociology in a manner which will allow more flexible patterns of approach by the users of the system. The general system rationale…