While geographic search filters exist, few of them are validated and there are currently none that focus on Germany. We aimed to develop and validate a highly sensitive geographic search filter for MEDLINE (PubMed) that identifies studies about Germany. First, using the relative recall method, we created a gold standard set of studies about…

This paper explores possibilities for marrying data visualization to online archival finding aids, which have continually suffered from usability issues in their long history. This paper describes a project in which two different data visualization models were built to replace sections of an archival finding aid. Users were then shown the models,…

Discovery layers provide a simplified interface for searching library resources. Libraries with limited finances make decisions about retaining indexing and abstracting databases when similar information is available in discovery layers. These decisions should be informed by student success at finding quality information as well as satisfaction…

PubMed® is an on-line literature database hosted by the U.S. National Library of Medicine. Containing over 21 million citations for biomedical literature--both abstracts and full text--in the areas of the life sciences, behavioral studies, chemistry, and bioengineering, PubMed® represents an important tool for researchers. PubMed® searches return…

An unprecedented amount of information encompassing almost every facet of human activities across the world is generated daily in the form of zeros and ones, and that is often the only form in which such information is recorded. A good fraction of this information needs to be preserved for periods of time ranging from a few years to centuries.…

Discussion of information retrieval and the derivation of new knowledge from bibliographic databases focuses on medical journal literature. Topics discussed include the incomplete coverage of medical literature on databases; searching by free text or title words versus searching by assigned subject headings; and the implications of these factors…

Argues that users' needs should play a more prominent role in the design or choice of an online catalog in a specific library, and outlines requirements which enhance ease of use. Areas discussed include operational control, search formulation control, access points, output control, user assistance, and hardware requirements. (nine references)…

This digest provides information and advice for accessing information from the Educational Resources Information Center (ERIC) database, a federally funded information network designed to provide users with ready access to education literature. It describes the database, the best ways to access ERIC, the thesaurus of ERIC descriptors, and the use…

This introduction to the characteristics of software for CD-ROM describes programs used to format and create data stored on the disk, as well as retrieval programs. Criteria that need to be considered when evaluating CD-ROM software are discussed, including retrieval strategies (browsing vs. keyword searching), interfaces, index and file…

Characterizes information retrieval systems in a network environment from a user's perspective along two axes: query and presentation. Several examples of early, current, and developing information retrieval systems are considered within this framework, and Daltext, a prototype system to support research on text-based retrieval systems, is…

Reviews the literature on the content aspects of database quality, specifically scope, composition, currency, accuracy, consistency, completeness, and source, journal, geographic, language, and time-period coverage. These criteria can be evaluated qualitatively and/or quantitatively to determine the profile of a database, and to ascertain search…

This paper reviews the services provided by the ERIC system and suggests ways to broaden its scope through coordination with other existing education databases. The first of four major sections chronicles the evolution of ERIC and explains why it has not been able to exercise true bibliographic control over the literature of education. The second…

Organized from the viewpoint of information retrieval theory, this review addresses issues of chemical information representation, comparison and matching, and retrieval strategies. Additional topics include similarity and clustering, visualization, and molecular diversity. Trends in research and application are identified, and gaps in the…

Currently available World Wide Web search engines determine a site's qualification as a response to a search request by matching keywords in the request to keywords representing the site. The returned sites are given a score and ranked according to the match on keywords. Many of these retrieved sites can be irrelevant to the user's true…