A model identifying seven principal dimensions of information systems and sources is developed and tested. The dimensions are defined in terms of required user behavior, with an associated scale indicating differential levels of this behavior. Both system design behavior and probable use behavior information in compatible forms are yielded. (15…

Three models for the design of information systems are presented: microanalytic, macroanalytic, and esoteric. Systems which illustrate these models are discussed, and design principles extracted from the literature are listed. (Author/KP)

The authors advocate a systematic procedure involving the identification of: fixed parameters, variable options for each variable parameter, factors affecting a choice among available options, factors affected by a choice among available options, and the optimum sequence in which decisions should be made during the design process. (Author/MF)

The main conclusions are: the human factor appears to be the main variable in all components of an information retrieval system; length of indexes affects performance considerably more than indexing languages; question analysis and search strategies affect performance to a great extent - as much, if not more than indexing. (Author/MF)

The main purpose of this paper is to seek classes of design implications in data-base oriented languages. Its scope is not limited to library automation, but extends to the problem of scientific and business data-bases. (14 references) (Authors)

Describes the motivating reasons for a systematic approach to the specification, design, and development of information systems, and surveys some of the methods developed to assist software specification and design. Ways that system development organizations can create and use such techniques are emphasized. (Author/FM)

Reviews the development of online systems in science and technology from batch searching through the advent of multinational online services, describes the key technological components, and discusses the economics of online systems. (Author/FM)

This introduction presents a framework for discussing hypertext, previews individual articles, and discusses some relations of hypertext to library science. Historical notes are also provided, as well as biographical information on the authors of individual articles in this special section. (16 references) (CLB)

Reviews several noncyclical, nonrepetitive hypotheses that try to predict broad spectrum maturational stages of overall information technology growth. Based on the areas of convergence among the hypotheses, several predictions are offered, and it is suggested that we are at a major transition point entering the third stage of computerized…

Discusses artificial intelligence (AI) and considers four potential roles for AI in information retrieval (IR): (1) information characterization, i.e., building a knowledge base; (2) information seeking, i.e., search formulation; (3) support functions, including abstracting; and (4) systems integration. Three examples are given that show how AI…

Describes the architecture and functioning of a system developed specifically for text processing applications--such as information retrieval--that can benefit from structural comparisons between elements of text, such as queries and abstracts. The general ways in which the system performs matches and the ways in which this objective influenced…

Presents an overview of nonbibliographic computerized databases in business and economics, science and technology, and the social sciences, and discusses some major issues in the field. (FM)

Discusses system modeling and specification as it relates to object-based information systems development and software development. An automated system model based on the objects in the initial requirements document is described, the requirements document translator is explained, and a sample application of the technique is provided. (12…

Presents a model of human information needs which classifies information need types by their inherent properties. The influence of information needs on human behavior, and the need to incorporate this concept into information storage and retrieval systems, are discussed. (15 references) (CLB)

Reports on axiomatic approach to systems design that has emanated from documentation work in field of chemistry and closely related disciplines. It is based on five axioms: definability, order, sufficient degree of order, representational predictability, and representational fidelity. Mandatory indexing is discussed; a glossary is appended. (106…