Describes significant attributes of expert systems, contrasts them to conventional computer systems, and provides an overview of the R1 expert system used by Digital Equipment Corporation (DEC) to put together operational systems that meet customers' requirements. Document handling, particularly pictures and images in documents, is also briefly…

A look at the University of Wisconsin's system of cataloging documents which comprise a personal library, in such a way that they may be located efficiently by subject descriptors or author. (Author)

The FID Central Classification Committee is responsible for UDC and its revision. The Standard Reference Code (SRC) has been developed to meet the FID need for a new superstructure of UDC and the UNISIST need for a Broad System of Ordering. UDC and SRC will have a strong influence on each other. (Author/JB)

A one-time data entry system, coupled with an efficient use of the computer, which provides inventory management, distribution, and audit reporting, the ability to answer special queries, and to produce customized reports is described. (3 references) (Author)

The objectives of this paper are to describe the effect of using weighted index terms in a document retrieval system, and to evaluate retrieval performance when queries are expanded by terms occurring in clusters with the query terms. (16 references) (Authors)

A statistical model for characterizing the growth patterns of data base utilization and for estimating future utilization levels of demand has been developed for information retrieval organizations. Illustrations of the model applied to a typical information retrieval organization are given and discussed. (5 references) (Author)

Two statistical models for estimating search time have been developed for the CA Condensates data base using the University of Georgia Text Search System. Comparative timings between the Chemical Abstracts Service search program and the University of Georgia search program are made for the Ca Condensates data base. (5 references) (Author/NH)

Broad coverage is essential to the effectiveness of information services. This paper criticizes the misleading claims made regarding computer-based systems in this context. It describes the Scientific Documentation Centre's services, the basis on which its resources are allocated, and the criteria for selection of operating techniques and…

The incentive and the main lines of French policy on chemical information, as well as their implementations, are described. The DARC (Description, Acquisition, Retrieval, Correlation) system is being implemented as a tool of national policy for chemical information. (21 references) (Author/NH)

SRI attempts to apply aerospace research results to biomedicine are revealing inadequacies of present information systems when information originates in different discipline from that of user. Author suggests catergorizing characteristics of originator, symbolic vehicle, coding process and user, with possible design of new systems as well. (PD)

Discussed is the Czechoslovak program of State Information Policy which aims at the construction of a unified, integrated national system of scientific, technological and economic information. (Author/SJ)

The article describes how institutions with modest funds can use less complex information retrieval techniques to aid in counseling and placement of college students. (Author)

Considers problem of optimal scheduling of Boolean expression (each Boolean variable represents binary outcome of program module) on single-processor system. Optimization discussed consists of finding operand arrangement that minimizes average execution costs representing consumption of resources (elapsed time, main memory, number of…

Suggests a unified concept of a lexical subsystem as part of an information system to deal with lexical problems in local and network environments. The linguistic and control functions of the lexical subsystems in solving problems for large computer systems are described, and references are included. (Author/BK)