Query forms used in library information systems are expressed in a generalized notation. Three relations, the FIELD, the inverse FIELD and the RECORD, are defined to express file access operations in known-item and subject searches, browsing, clustering operations, and truncation and word proximity searching. Eighteen references are cited. (EJS)

Explores nature and magnitude of extensions needed in order to use a library circulation control system as an online catalog, noting Margaret Mann's eight functions of a library catalog, authority control, cross references, correlating subjects, structure revision, adding access, terminal needs, and system reliability. Nine references are cited.…

Proposes algorithmic method of searching and presents experimental data testing efficacy of using Boolean negation to eliminate redundancy and reduce cognitive strain of communication barrier at human-computer interface. Cognitive information processes, concept of Boolean NOT, and problem-solving behavior are explored. Twenty-five references are…

This review of research on subject searching in library catalogs includes a summary of research findings, reasons for search failures, free text versus controlled vocabulary searching, and studies of users' needs. Suggestions for future action to improve subject access in the online catalog are noted. A 52-item bibliography is included. (EJS)

The concept of Thai soundex system for name search as method of information retrieval is developed and evaluated by extending and modifying Odell and Russell soundex system to fit specific characteristics of Thai language. Thai consonants, letter codes, and evaluation of system in name file of 61,215 records are highlighted. (EJS)

Presents uniform and efficient approach for processing all truncated query terms in information retrieval which requires one disk access to obtain from the permuted dictionary all strings represented by truncated term. The problem of the overhead storage required to implement the permuted dictionary is discussed. Fifteen references are provided.…

Presents and discusses the results of research into similarity measures for search request formulations which employ Boolean combinations of index terms. The use of a weighting mechanism to indicate the importance of attributes in a search formulation is described. A 16-item reference list is included. (JL)

Describes the computerized film documentation system being developed for use in the Film Archives of the Netherlands Information Service. The organization of the films by historical periods, the film access system, content analysis of the films, and operation of the film retrieval system are discussed. Four figures accompany the text. (Author/JL)

Briefly summarizes the results of a recent American Library Association (ALA) study on "Financing Online Search Services in Publicly Supported Libraries." The background of the survey, the general patterns revealed by responses concerning the kinds of fees charged to users, and the availability of the complete study are included. (JL)

Discusses advantages and disadvantages of online availability of computerized versions of encyclopedias and notes works currently and soon to be online, searching strategies (subject headings and full-text), cost effectiveness, and librarian skepticism. (EJS)

Discusses the use of pathfinders, i.e., bibliographic tools designed to assist patrons in locating published information in specific fields by themselves. Use of pathfinders as teaching tools and special suggestions for their development by public libraries are noted. A pathfinder on personal financial management is included. (EJS)

Discussion of online interactive search systems focuses on developments in the area over the past decade, the possibility of the end user undertaking online searching for him/herself, the changing role of the information scientist, implications for the information manager, and electronic publishing. Eight references are included. (EJS)

The Video PATSEARCH system consists of a microcomputer with a special keyboard and two display screens which accesses the PATSEARCH database of United States government patents on the Bibliographic Retrieval Services (BRS) search system. The microcomputer retrieves text from BRS and matching graphics from an analog optical videodisc. (Author/JJD)

Videotex systems are reviewed and grouped into five general classes: information retrieval, transactions, messaging, computing, and telemonitoring. The videotex technologies providing these services at the user end are described and a series of technological enhancements for each service is discussed. (Author/JJD)

A proposed cataloging and information access tool for children's media would combine the most useful aspects of library subject-heading lists and thesauri to meet American Library Association recommendations for subject cataloging of juvenile material. Computer-based production of a preliminary edition is planned for 1983. Fifteen references are…