Using abstract models of thesaurus-based and multi-attribute retrieval systems a correspondence between the two systems is established so that equivalent transformation of problem statements expressed by notions developed for one system into problem statements expressed by notions pretaining to the other one may be effectively constructed. (5…

Substantial degrees of compression of bibliographical data bases result from the application to them of a modified form of run-length coding. (14 references) (Author)

A probabilistic model for interactive retrieval is presented. Bayesian statistical decision theory principles are applied: use of prior and sample information about the relationship of document descriptions to query relevance; maximization of expected value of a utility function, to the problem of optimally restructuring search strategies in an…

The theoretical model of a document retrieval system is described by giving logical meaning to the vagueness and the similarity characteristic to such systems, with the frequency of occurrences of keywords and the relations among them taken into consideration. (6 references) (Author/SJ)

Several problems of finding keys in directories are considered. Methods of searching ordered and unordered directories are analyzed. Searching on ranges of key values in also considered. Finally, design tradeoffs among the classes of directory and searching strategies are developed. (4 references) (Author/SJ)

This paper investigates automatic resolution of ambiguities from natural language text. By learning from a series of inputs and its own errors, the system is able to construct resolution rules automatically. Results show success in disambiguation. (8 references) (Author/KE)

A retrieval system using computer facilities keeps track of job applicants' records. (MF)

The author discusses the process of information retrieval in its smallest scale: that is, the retrieval of information from within a single document, as distinct from the retrieval of the document (as a whole) from a library or other collection of materials." (Author/AK)

Some problems arising in the combination of discipline-oriented retrieval systems for the purpose of constructing a specialized retrieval system for a multidisciplinary topic are considered. A compromise solution involving an augmented combined index is suggested. (4 references) (Author/NH)

A brief history of bibliographic activities of the U.S. Geological Survey, including development of a computerized publishing system is given. Also described is the design of the bibliographic search system, application of the Generalized Information Processing System (GIPSY) to storage and retrieval of earth sciences literature, and preliminary…

The results showed that the selection criteria laid down by Drugdoc are strictly adhered to; the mean time of alerting of an article is 11.3 weeks after receipt of the journal, and all articles from a particular journal issue are reported by Drugdoc on average within 13.6 weeks. (3 references) (Author/MM)

Indicates how a college, with an IBM 1130 computer, can facilitate information storage and retrieval by using magnetic disc storage in conjunction with ACT Program, 80-column Hollerith-type card format especially designed for the college. (JF)