Describes a progression of tests that were developed for assessing online database accuracy. Results of the tests are discussed and compared; examples of search queries on DIALOG are given; and the possibility of standardizing such tests are considered. (Contains 11 references.) (LRW)

Discusses end-user searching in Boolean information retrieval systems considers the role of search intermediaries and proposes a model of user preferences that incorporates a user's profile. Highlights include document representation; information queries; document output ranking; calculating user profiles; and selecting documents for a local…

Examines factors related to efficiency in a textbook search task. Finds that time and accuracy involved distinct processes and that accuracy was related to verbal competence. Finds further that measures of planning and extracting information accounted for 59% of the variance in search efficiency. Suggests that both accuracy and rate need to be…

Presents results of a study that examined the effectiveness of adjacency operators in improving precision and recall in FirstSearch title keyword searches. Compared subject headings of retrieved items to sample title subject headings and discovered that when keywords were limited in meaning and adjacency operators were used, precision was…

Describes the Kodak Picture Exchange that includes a database of over 200,000 photographic images collected from 28 stock photography companies in the United States that allows the user to search for images by topic. Highlights include installing the software, alternative search strategies, costs, manipulating images, and rules governing the use…

Describes Project Alexandria, a digital library initiative funded by the National Science Foundation based at the University of California, Santa Barbara, that provides online access to spatial data in a distributed environment with search options by areas of interest on a base map or by text, according to user preference. (Author/LRW)

Discussion of hypertext for computer-assisted instruction highlights SINS (Semistructured Intelligent Navigation System), a hypertext system that addresses and solves navigation problems common to hypertext environments. The semantic search mechanism of SINS is explained, and SINS is compared with HyperCard using searches performed by veterinary…

Describes the use of CD-ROM products containing company and industrial information for job searches and career planning. Examples of potential applications are provided, and search capabilities are examined. Brief descriptions of several products are presented, including a database of Security and Exchange Commission filings, Disclosure, Lotus One…

Discussion of human-computer interfaces focuses on the use of graphical and direct manipulation approaches to improve the user interface. Topics discussed include information seeking; computerized search capabilities, including full-text string searches, index searches, and hypertext; Boolean expressions; dynamic or direct manipulation queries;…

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)

Defines a type of literacy task, the search task (locating specific information). Explains why it is of concern, describes research on high school and college students' searching, and offers suggestions for search instruction. (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)

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)

Discussion of the role of Boolean logic in the information retrieval process focuses on a study that investigated the optimization of search logic for the MEDLINE database. Measures of retrieval effectiveness are discussed, the relationship of weighting schema and the logical schema is considered, and further investigations are suggested. (17…