Designed for use with a computer-produced subject index, PRECIS assigns clerical procedures in subject heading work to computer programs. The subject headings represent a unique combination of several different characteristics, permitting several coextensive forms of a subject name for each work. Final choice amongst alternatives is made by the…

The recently accepted practice by LC of systematic duplication of entries at specific and generic levels is discussed. The new practice is justified but its goals are not accomplished--it does not reveal more of the LC collection, causes inconveniences, and a pointless enlargement of catalogs. It should be abandoned. (Author)

The major topics included in this paper are: thesaurus structure, later developments, functions of thesauri, keyword list generation, compatibility, and maintenance and updating. (NH)

The relative retrieval efficiency of the title searching technique and the index term searching technique is so close that the choice of one method or the other must be primarily on economic grounds. (9 references) (Author)

An introduction to the classification principles for documents at the Non-Formal Education Information Center is given for the cataloger. The classification scheme, itemized in the first section, consists of 11 main categories such as concepts, training methods, program content, bibliographies, and countries. The next section details…

Specific aspects of the thesaurus treated in this brief review are: thesaurus as a concept, classification and structure, and language compilation and control. (75 references) (NH)

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…

The Textile Information Retrieval Program (TIRP), a study made at the Massachusetts Institute of Technology to develop an interactive information retrieval system operating on a time sharing computer, was demonstrated to and operated by research scientists, information specialists, and numerous other persons at North Carolina State University at…

This brief overview of some vocabulary control schemes in non-scientific fields is intended to suggest that the complexity of the design problem increases with the newness of the field involved. (Author/NH)

Construction planning, vocabulary base development, and term analysis and grouping are the main subjects treated in this paper. (NH)

The main objective of this comparative survey of the use of classification in science information is to explore the possibility of adopting a standard general classification in this field. Classification is defined as the grouping, division and/or sequencing according to meaning, of subject representations such as catalogue or index terms,…

Examines through a series of mathematical models (theorems, descriptions, and examples), properties and operations on inverted files, which are used in an information retrieval system based on thesaurus with weighted descriptors. (CWM)

Analyzes the use of weights to denote a query representation and/or the indexing of a document as a generalization of a Boolean retrieval system. Criteria are given for the functions used to evaluate the relevance of the records to a specific query and a new evaluation approach is suggested. (CWM)

Presents a new method of document retrieval based on the fundamental operations of fuzzy set theory. Basic notions are introduced. Then the syntax and semantics of the proposed language for document retrieval is given, and an algorithm allocating documents to particular queries is described and its properties are discussed. (Author/CWM)

Shape Recovery Analysis (SHERA), a new visual analytical technique, is applied to the N-Gram hypothesis on matched Japanese-English technical documents. Results reveal compaction in the translation of Japanese subject terms to English subject terms. The biagram approach to the Japanese data yields a remarkable similarity to the matching visualized…