Describes a study conducted at Oregon Health Sciences University that compared the use of three retrieval systems by medical students: a Boolean system, a word-based natural language system, and a concept-based natural language system. Results showed no statistically significant differences in recall, precision, or user preferences. (Author/LRW)

Compares free text versus controlled vocabulary searching for information relating to women's issues on the ERIC laserdisk database from Dialog. Topics discussed include terminology and women's studies; Boolean operators; and adequacy of the ERIC thesaurus for searching relevant topics including women's social roles, antiabortion movement, teenage…

Discusses Dialog's recent new pricing structure and its effects on librarians and other information professionals. Presents charts that compare Dialog databases with other search services (Dow Jones Interactive, LEXIS-NEXIS, OCLC FirstSearch, Ovid, Questel-Orbit, SilverPlatter, and STN) and Dialog via other channels (DataStar, Dialog Select,…

Suggests a method that allows searchers to analytically compare the Boolean and probabilistic information retrieval approaches. Sample performance figures are provided for queries using the Boolean strategy, and for probabilistic systems. The variation of performance across sublanguages and queries is examined, as well as the performance of models…

Reviews published studies of Web searching. Proposes a framework for future studies that will facilitate comparison of results. Presents advantages of such a framework, and discusses the implications for the design of Web information retrieval systems studies. Compares/contrasts the searching characteristics of Web users with users of traditional…

One of the most common uses of the World Wide Web for foreign language learning is as a resource for students to find information when researching essay topics. When language instructors ask students to perform searches for information about a given issue it is assumed that students know how to perform those searches and appreciate the usefulness…

A comparative analysis of two decision making strategies was conducted. One strategy compared alternatives on their best attributes for "the best payoff," while the other strategy called for accepting the first alternative that achieved all minimum cutoff values for all attributes. The subjects, 211 college students, selected a mayoral preference…

Discusses the use of optical disk technology in online searching and compares three versions of the ERIC database currently available on optical disk in terms of hardware requirements, ease of installation, scope and cost of the system, search procedures, displaying and printing results, and documentation and user support. (CLB)

Term paper bibliographies were independently examined and rated by a librarian and a writing instructor. Students receiving bibliographic instruction in classes that taught a cognitive strategy for using library resources did a better job of accessing and using library resources than those whose instruction emphasized specific tools and resources.…

Detailed analysis of 462 university faculty search request forms identifies similarities and differences among representatives of academic disciplines in their approaches to seeking information online. Search particulars noted include comprehensiveness, scope, language, retrospectiveness, relevant citations, search purpose, funding, clarity, and…

A subject profile using 39 concepts central to the practice of social work was searched in Social Work Abstracts (SWAB), PsycINFO, ERIC, and Social SciSearch. Social work practice concepts and search strategy, search term results, journal titles searched, and source coverage and date of most recently indexed article are noted. (EJS)

Controlled experiments conducted to compare effectiveness of enhanced experimental computer intermediary system, CONIT, with that of human expert intermediary search specialists indicate that experimental intermediary techniques are now capable of providing search assistance whose effectiveness at least approximates that of human intermediaries in…

Evaluates database searching and compares results of online and manual literature retrieval conducted in support of environmental research. Discussion covers search topic and construction of online profile, results and costs of online searches, results of manual searching, relevant references missed by online searching, and availability and…

Cites major U.S. encyclopedia publishers interested in developing machine-readable versions and suggests design possibilities for accessing encyclopedia databases. Full text searching, searching by fields, and sorting on fields are presented as techniques that provide online systems with significant advantages over print. There are five…

Describes a project that demonstrates subject searching in an experimental online catalog based on academic library databases that were enhanced with search trees; compares the retrieval effectiveness of search trees with random subject searching approaches; evaluates system and retrieval effectiveness; and discusses proposed research. (Contains…