Describes the Perseus project, a hypertext database of textual and visual materials for the study of classical Greek civilization. The anticipated needs of users are considered; current and potential capabilities of information technology are discussed; and the selection, organization, and presentation of materials are described. (seven…

Online bibliographic and network-based information systems are starting to blur the boundaries that separated print documents. Two concepts emerge as a consequence: the union record, an entity that combines multiple catalog records for a single bibliographic item; and an information dossier, a hypertext-like information object built by linking…

Describes a study that examined the rates of use of descriptors in the ERIC (Educational Resources Information Center) system during 1966-86 to determine whether certain levels of terms were used more than others and whether patterns of use were similar among hierarchies in the ERIC Thesaurus. (10 references) (LRW)

Examines the roles of librarians and reporters and the use of information technologies by newspapers. Finds that information retrieval technologies and databases are causing the work of newspaper reporters and librarians to merge and blend. Finds that 90 percent of the newspapers studied subscribed to a least one database, and 60 percent searched…

Outlines the file structure requirements for a microcomputer-based information retrieval system using FoxPro, a relational database management system (DBMS). Issues relating to the design and implementation of such systems are discussed, and two possible designs are examined in terms of space economy and practicality of implementation. (15…

Traces the increasing use of databases and computerized records of government agencies in newsrooms during the 1980s. Reports on a national survey showing that most journalism education programs do not prepare students to use these rich sources of information now routinely used in the newsroom. (SR)

This guide to searching for special education information in the ERIC (Educational Resources Information Center) database covers: selecting a search system, using the "Thesaurus of ERIC Descriptors," using Boolean logic, planning the search, and using the ERIC Clearinghouses as resources. (DB)

Provides a comprehensive system for professional evaluation of CD-ROM software. The system extends the work of Peter Jacso by including a detailed evaluation form using a simplified rating scale. It also incorporates the CD-ROM Consistent Interface Guidelines, which propose 13 basic functions for CD-ROM user interfaces. The evaluation form is…

Discusses problems with subject searches in online library catalogs and examines theoretical principles for the design of effective information retrieval systems. Probabilistic ranking methods are discussed, and an experimental online catalog called CHESHIRE is described. It is noted that CHESHIRE uses classification clustering, provides natural…

Discussion of image-based information retrieval systems focuses on indexing. Highlights include computerized information retrieval; multimedia optical systems; optical mass storage and personal computers; and a case study that describes an optical disk system which was developed to preserve, access, and disseminate military documents. (19…

Examines, in two studies, the cognitive processes involved in locating specific information in a document, such as a table or directory. Concludes that efficient search is a matter of selective inspection to retrieve information relevant to specific goals. (SR)

Discusses term position as a search tactic in Boolean retrieval systems and describes ranked output systems that have used term weighting. The use of term proximity devices in ranked output systems is proposed, the algorithms used are explained, and a search experiment with a test collection is described. (19 references) (LRW)

Discusses ways in which using mathematical symbols to search online bibliographic databases in scientific and technical areas can improve search results. The representations used for Greek letters, relations, binary operators, arrows, and miscellaneous special symbols in the MathSci, Inspec, Compendex, and Chemical Abstracts databases are…

These two articles introduce a new model of probablistic information retrieval (PIR) that is based on the statistical technique of the combination of expert opinion (CEO), which in this model is the opinions of indexers and users. Part 1 presents the conceptual basis, while Part 2 explains the mathematical details. (73 references) (LRW)

Reviews selected research on content-enriched access (including information components such as tables of contents and indexes) in information retrieval systems. It is concluded that well-selected content components and full-text materials in electronic systems must be linked with improved search methodologies, better interfaces, and greater…