An efficient search procedure is presented for determining the optimal number of observations of facets in a design that maximize generalizability when resource constraints are imposed. The procedure is illustrated for three-facet and four-facet designs, with extensions for other configurations. (Author/SLD)

Two conceptions of domain analysis in library and information science emphasize theories of knowledge and study of literatures. Studies of information seeking and use can make an important contribution to domain analysis, and help integrate the two approaches. As understanding of information use develops, models can be constructed that represent…

This report describes a real-time simulation experiment to evaluate the performance of the search and editing system 3RIP, an interactive system written in the language BLISS on a DEC-10 computer. The test vehicle, preliminary test runs, and capacity test are detailed, and the following conclusions are reported: (1) 3RIP performs well up to the…

One response to the large and rapidly growing number of legal cases with which nonlawyer researchers must deal is computerized legal data retrieval technology. LEXIS, an example of such technology, improves upon traditional research tools in two ways: it increases the speed with which researchers may discover relevant documents and, through its…

Describes six leading numeric databank services and compares them with bibliographic databases in terms of customers' needs, search software, pricing arrangements, and the role of the search specialist. A listing of the locations of the numeric databanks discussed is provided. (CLB)

The author describes search conferences designed to allow participants to scan the broad environment of the elderly and to generate recommendations on key issues identified. He also comments on the process and content of the seminars and discusses and comments on some of the theoretical assumptions of searches. (CT)

Twelve prominent K-12 educators and educator librarians share their techniques and tips for helping students become effective, life-long information users. Through a series of skillful interviews, Joyce Kasman Valenza--techlife@school columnist for the "Philadelphia Inquirer" and herself a tech-savvy high school librarian--gets the experts to…

Discussion of evaluation methodology in information retrieval focuses on the average precision over a set of fixed recall values in an effort to evaluate the retrieval effectiveness of a search algorithm. Highlights include a review of traditional evaluation methodology with examples; and a statistical inference methodology called bootstrap.…

Discusses problems facing naive users of interactive information systems (IIS) that have been identified through classroom research. Impediments to successful use of IIS are students' inability to make use of non-text-based information sources and difficulty choosing appropriate search strategies. Mental models developed by users may provide clues…

Physical access to information is only the first step. Gaining intellectual access to appropriate information is a challenge. Students have trouble using appropriate indexes, generating searching synonyms, and developing conceptual fluidity. They also need considerable assistance in evaluating and using information. (14 references) (MLH)

Introduces the basic ideas that underpin applications of machine learning to information retrieval. Describes applications of machine learning to text categorization. Considers how machine learning can be applied to the query-formulation process. Examines methods of document filtering, where the user specifies a query that is to be applied to an…

The decision to search for birthparents is one that all adopted persons consider. The focus of this study is to describe, for a group of adopted adolescents, who chooses to search and who does not and to explore how search behavior is related to the functioning of the adolescents' adoptive families and adolescents' psychological adjustment.…

This two-part study was designed (1) to determine differences in the costs of searching BRS After Dark (BRS AD) and Knowledge Index (KI) generally and across ten selected databases, and (2) to determine whether there is a difference in the citations retrieved when the same search is conducted on the same database in both systems. Study methodology…

This presentation describes the features of the PRO-SEARCH front-end software package and how they can enhance online searching. The cost savings in terms of decreased connect time and convenience for the inexperienced searcher are discussed. The relationship between the quality of reference services and the effectiveness of using PRO-SEARCH in a…

The efficacy of using the BIOSIS Previews database as an online information retrieval tool in clinical psychology was investigated in a study conducted at the University of West Florida. Recognizing the importance of multi-database searching strategies when seeking comprehensive results, this study compared the citation output of this…