Practical Aspects Concerning the Development and Use of ASTIA's Thesaurus in Information Retrieval.

: A detailed description of the nature of ASTIA'S report literature control problem and the evaluation of a mechanized system for storage and retrieval of document references pertaining to science, technology, and medicine. The application of the thesaurus concept for control of an indexing vocabulary is related and the revision of the First Edition of the Thesaurus of ASTIA Descriptors is explained. Problems arising from efforts to evaluate terminology and indicate relationships among selected descriptors are discussed in terms of the broad principles derived. Emphasis is placed on the importance of the human element in a mechanized information retrieval system.