Literature showing the disadvantages of Boolean logic in online searching is reviewed, and research comparing the Filter/Flow visual interface (i.e., a graphical representation of Boolean operators) with a text-only interface is described. A significant difference in the total number of correct queries is reported that favored Filter/Flow. (16…

Describes an experiment which compares two methods of charging users for online searches; first, a time-based charge; and second, a two-part fee determined by connect time and citations printed. The results are analyzed in terms of patterns of user activity under both systems. (CLB)

Describes a new Boolean retrieval environment in which an extended soft Boolean logic is used to automatically construct queries from original natural language formulations provided by users. Experimental results that compare the retrieval effectiveness of this method to conventional Boolean and vector processing are discussed. (27 references)…

Identifies limitations in the use of term co-occurrence data as a basis for automatic query expansion in natural language document retrieval systems. The use of similarity coefficients to calculate the degree of similarity between pairs of terms is explained, and frequency and discriminatory characteristics for nearest neighbors of query terms are…

Describes research that identified possible uses for general interest magazine articles online in full text. It is concluded that, as no one search strategy works best for all uses, databases and online systems should offer a full range of proximity operators, display features that facilitate browsing, value added fields, and diverse cost options.…

Describes the functions of citizens advice bureaus in Victoria and discusses the results of a study that examined types of problems users presented, other information sources users contacted, and types of assistance sought and preferred by users. The effects of socioeconomic status on these factors is also discussed. (CLB)

Reports results of a survey of information needs and information seeking behavior of a national sample of the United Kingdom population. Fourteen tables show results, including: demographic details of respondents; past and future information needs; preferred sources of information; preferred methods of obtaining information; and perceived…

Describes a study of library users' search strategies which focused on the extent of subject searching activity when using bibliographic tools and shelf browsing. The use of the results to evaluate the impact of a future online catalog on search behaviors is discussed. (23 references) (CLB)

Describes evaluation of an automatic query expansion (AQE) facility in the Okapi System, an online library catalog at City University in London (England). Results of transaction log analysis, search replays, questionnaires, and interviews are presented; and findings are discussed which indicate that AQE was beneficial in many searches. (12…

Describes the design and development of a prototype expert system called ONLINE-EXPERT that helps users select online databases and vendors that meet users' needs. Search strategies are discussed; knowledge acquisition and knowledge bases are described; and the Analytic Hierarchy Process (AHP), a decision analysis technique that ranks databases,…

Describes a study that examined how well human intermediaries understand and translate a client's information need statement without the client being present. Virtual libraries are discussed; the satisfaction of a client is considered; and the use of term frequency as an indicator of content is described. (18 references) (LRW)

This two-volume document describes a study which focused on characterizing the elements involved in information seeking and retrieving, particularly in relation to the cognitive decisions and human interactions involved in online information retrieval. The study objectives were to conduct experiments and observations, under conditions as close to…

Reports the findings of a survey of Rhode Island depository libraries that examined how the state's publications are cataloged by libraries and located by users. It is concluded that a system of bibliographic access based on user needs and universally adopted by the libraries would improve access. The questionnaire used is appended. (12…

Describes the methodology and findings of a survey of 196 faculty members at an academic research library. Focusing on use of subject searches in card and online catalogs, the study compared use by faculty from the humanities and social sciences with use by faculty from the natural sciences and engineering. (Author/CLB)

Reports a study that analyzed natural language search statements constructed by 22 Getty Visiting Scholars as they researched humanities topics on DIALOG. Results show a greater use of names, geographical areas, chronological periods, and discipline terms than scientists use, with implications for the design of humanities online systems and…