This report explores the scope and limitations of the use of citations of published works as measures of the influential productivity of scientists, and suggests that publication citations be utilized for educational research. The Science Citation Index is a list of references (cited works), each of which is followed by a list of the sources…

Analyzes a study of the effect of controlled variations in indexing vocabulary size on retrieval performance, using the Cranfield 200 and 1400 test collections. Sets of variable-length character strings were tested, in an application of the Cluster Hypothesis and in a series of linear associative retrieval experiments. (Author/SW)

SEARCH STRATEGIES WHICH CAN BE CONTINUOUSLY MODIFIED WERE DEVELOPED FOR COORDINATE SEARCHING SYSTEMS. USING THE FILES OF THE NASA TECHNOLOGY UTILIZATION PROGRAM AT THE KNOWLEDGE AVAILABILITY SYSTEMS CENTER, UNIVERSITY OF PITTSBURGH, A STUDY WAS CONDUCTED OF THE RETRIEVAL OF RELEVANT DOCUMENTS BY BOTH MANUAL AND MACHINE METHODS FOR FIVE QUESTIONS…

Discusses ranking techniques for document retrieval and proposes an evaluation, or filtering, technique that reduces costs and memory usage by early recognition of which documents are likely to be highly ranked. Highlights include index design, ranked query evaluation, reducing the number of accumulators, inverted file structures, and experimental…

Two articles discuss the clustering of composite representations in the Cystic Fibrosis Document Collection from the National Library of Medicine's MEDLINE file. Clustering is evaluated as a function of the exhaustivity of composite representations based on Medical Subject Headings (MeSH) and citation indexes, and evaluation of retrieval…

When systems of ordering, such as classifications and thesauri, are used, two mappings are involved: objects (documents) in the collection and searchers' queries. Four means to achieve this are: relative indexes; syndetic structures; entry vocabulary indexes; and human intermediaries. These forms can supplement and augment each other. The…

An indexer faces unique challenges when the genre consists of biographical material written for children. The narrative prose style demands vividly descriptive indexing terms, but the youthful audience requires a control of vocabulary and a clear, simple presentation. The literature of library and information science yields a few sources on the…

Explores current research on indexing and ranking as retrieval functions of search engines on the Web. Highlights include measuring search engine stability; evaluation of Web indexing and retrieval; Web crawlers; hyperlinks for indexing and ranking; ranking for metasearch; document structure; citation indexing; relevance; query evaluation;…

Briefly reviews research on citation indexing and citation analysis as techniques for determining relationships between documents and presents the results of a citation analysis of 31 library/information science articles in which source of cited work and source of citing work were considered as predictors of relatedness. Included are 24…

These two articles discuss clustering structure in the Cystic Fibrosis Document Collection, which is derived from the National Library of Medicine's MEDLINE file. The exhaustivity of four subject representations and two citation representations is examined, and descriptor-weight thresholds and similarity thresholds are used to compute…

AFTER A BRIEF SUMMARY OF THE TEST PROGRAM (DESCRIBED MORE FULLY IN LI 000 318), THE STATISTICAL RESULTS TABULATED AS OVERALL "ABC (APPROACH BY CONCEPT)-RELEVANCE RATIOS" AND "ABC-RECALL FIGURES" ARE PRESENTED AND REVIEWED. AN ABSTRACT MODEL DEVELOPED IN ACCORDANCE WITH MAX WEBER'S "IDEALTYPUS" ("DIE OBJEKTIVITAET…

In response to a growing need for a comprehensive evaluation and cataloging of nontextbook materials in the field of health sciences, the Educational Materials Project, sponsored by the National Library of Medicine, developed a clearinghouse system called AVLINE (Audiovisual on Line) for the dissemination of information about these materials. To…

This study describes the problems of searching in professional journals for relevant articles on the subject of adult education evaluation. Seventy-three journals were identified as containing 337 appropriate articles when searching with 11 title words; 43 percent of the titles referred to human behavior change while 57 percent referred to program…

The growth in the size of the Internet has resulted in much effort being spent on indexing its contents. The most popular solutions are created by automatic methods, and although offering impressive coverage, they are disappointing where precision of meaning is required. Alternative services created by human beings arrange and index resources…