Discusses the problem of data redundancy in a fuzzy relational data model and describes three existing frameworks of fuzzy data representation and redundancy treatment. A new treatment based on Zadeh's extension principle is proposed. (18 references) (MES)

Examines some questions arising in connection with the application and usefulness of Bradford's Law, which describes the dispersion of articles on a particular subject among journal titles. (Author)

Results of data analysis on 470 journal titles illustrate complexity of the fuzzy set theory modeling process, which consists of three factors--number of missing issues, citations, circulations--and its limitations in making journal binding decisions. Procedures of research, data collection, and data analysis are discussed. Matrices are included.…

A manual search of Journal Citation Reports provides information which would be particularly useful for librarians interested in forming special collections and difficult to obtain by other methods. (Author/MBR)

A library network model is reviewed and a derivation is presented that requires fewer assumptions and allows more robust representations of library networks. (Author)

Analyzes changing information values of journal article titles (measured by counting total number of words, number of keywords, and computing proportion of substantive words). Use of linear regression to determine change patterns for sample of titles from four selected journals, six library journals, and six miscellaneous journals (1951-1980) is…

Investigates the structure and interrelationships of the psychological literature as a preparatory step for studies of psychological research activity. Techniques of bibliographic citation analysis are used to construct influence measures for individual journals and for the subfields of psychology into which they have been classified. (FM)

Presents analysis of online search patterns within user searching sessions of National Library of Medicine ELHILL system and examines user search patterns on the CATLINE database. Data previously analyzed on MEDLINE database for same period is used to compare the performance parameters of different databases within the same information system.…

The method described permits visual analysis of information retrieval (IR) experiment results in classic control and treatment group protocols. It is an additional analysis technique for the evaluation of IR procedures that may be conducted within the rich terrain of human visual acuity, supported by two well-known statistical measures. (Contains…

Experiments studying the ability of catalog information to indicate the relevance and utility of documents by an analysis of the four main content indicating fields, e.g., the title, abstract, subject index phrases, and matching subject phrases are presented with data analysis. (Author/MBR)

Database Tomography (DT) is a textual database-analysis system consisting of algorithms for extracting multiword phrase frequencies and proximities from a large textual database, to augment interpretative capabilities of the expert human analyst. Describes use of the DT process, supplemented by literature bibliometric analyses, to derive technical…

This research shows that by submitting samples of the client's recent professional reading material to automatic text analysis, Selective Dissemination of Information (SDI) profiles can be prepared that result in significantly higher initial recall scores than do those prepared by conventional techniques; relevance scores are not significantly…

The purpose of this study is to demonstrate that economic analysis can be useful in modeling the scientific journal market. Of particular interest is the efficiency of pricing and page policies. To calculate loses due to inefficiencies, demand parameters are statistically estimated and used in a discussion of market efficiency. (3 references)…

A journal evaluation study was conducted at the National Oceanic and Atmospheric Administration (NOAA) libraries to assist in subscription renewals, collection relevance enhancement, and determination of efficient methodology. Data collection included a use study, circulation and inter-library loan statistics, core journals, questionnaires, costs,…

The third of a series, this article describes prototype experiments which place human decision makers in an interactive decision-making situation, presents results typical of those thus far observed in the prototype experiments, and describes preliminary analysis of the data. Three references are listed. (FM)