Describes the mental coding processes involved in the flow of information when the user is interacting with an enabling information-retrieval (IR) system, or a system designed to stimulate the user's grasping towards a higher understanding of the information need/problem/task that brought the user to the system. (Author/AEF)

Presents an overview of the ways in which user/system interaction in interactive information-retrieval (IR) systems has been treated in IR research and practice over the years. Describes the characteristics of a number of IR systems, as well as proposals for IR systems, in light of challenges set for by John Bennett in 1971. Contains 82…

Explores the utility of using prior domain knowledge (in the form of taxonomies over attributes, attribute values and concept classes) to constrain the rule learner's search by requiring it to be consistent with what is already known about the domain. Spreading Activation Learning (SAL) is used to efficiently learn over taxonomically structured…

Presents an interaction model and an experimental method for information retrieval. This automated method helps identify which user and system variables are relevant, which are independent of other variables, and which ranges of the variables are most important. Results show that relevance feedback consistently improves retrieval performance. (AEF)

Activities of the Institute for Computer Sciences and Technology (ICST) within the U.S. Department of Commerce during fiscal year 1986 are described in this annual report, which summarizes research and publications by ICST in the following areas: (1) standards and guidelines for computer security, including encryption and message authentication…

An information system can be viewed as a symbiotic relation between the users of the system and the system's hardware, software, and data resources. Ideally, performance evaluation of these systems should be based on the achievement of user based criteria while concurrently minimizing resource costs. Current evaluation technologies concentrate on…

NLS-SCHOLAR is a prototype system that uses artificial intelligence techniques to teach computer-naive people how to use a powerful and complex editor. It represents a new kind of computer-assisted instruction (CAI) system that integrates systematic teaching with actual practice, i.e., one which can keep the user under tutorial supervision while…

Over the past several years there has been considerable speculation concerning the role, direction, and characteristics of information processing systems in the future. The gap between the technological state of the art in computer-based information processing and today's applied practices in management information systems further clouds the…

Designed as a reference guide for those seeking information about systems equipment and supplies, this directory is a compilation of a selection of literature, bulletins, catalogs, manuals, and specification sheets about systems equipment and related supplies. The directory is arranged alphabetically by products. Each listing has an identifying…

Feasibility study findings indicate that a potential reduction in drudgery for the scholar may be obtained through a combination of heretofore divergent solutions to the increasingly critical problem of how researchers will interface with computers for an efficient and effective review of the literature. Presently existing computer software…

The technical feasibility of a continental information network for astronomy has been demonstrated in the course of a two-month experiment conducted jointly by Dearborn Observatory of Northwestern University and the Stanford University Computation Center. The experiment simulated a scientific information network based on a high-level retrieval…

The main objectives of Project BALLOTS (Bibliographic Automation of Large Library Operations Using a Time-Sharing System) are to control rising technical processing costs and, at the same time, to provide improved levels of service. This report on BALLOTS Phase II is concerned with the development and implementation of the production library…

This paper is the second step in the preparation of forecasts of occupational and industrial information which will meet the needs of the Information System for Vocational Decisions (ISVD). The author discusses the computation routines which need to be developed, tested and operationalized toward the goal of combining occupational and industrial…

Describes capabilities and advantages of spreadsheet software, including its ability to perform "what-if" analysis quickly and easily. Also noted are additional advantages; applications, including use in the library environment; history and development; new-generation spreadsheets; and enhanced packaging in the near future. A spreadsheet…

The Drug-Interface, prototype system built to facilitate retrieval of drug related information, automatically connects to DIALOG Information Retrieval Service via available networks, aids user in formulating and/or revising search strategy, sends query to DIALOG, displays results of search, and downloads relevant pieces into Macintosh data file.…