As the Web is becoming a powerful new medium in scientific publication and scholarly communication, citation indexing has found a new application in the digital environment. The authors reviewed the new developments in Web-based citation indexing and conducted a case study in three major citation search tools, "Web of Science", "Scopus" and…

SOME MACHINE-PRODUCED INDEXES ARE COMPARED TO ASSIST IN DECIDING ON THE FORMAT FOR A PROPOSED INDEX. THE OBJECTIVES OF AN INDEX AND THE SEARCH PROCEDURE ARE ANALYZED, AND AN EXPLANATION AND A RELATIONSHIP IS GIVEN FOR KEY-WORDS-IN-TITLE AND KEY-REFERENCES OF THE SAME ARTICLE. BASED ON THE COMPARISON OF THE INDEXES, A 53- YEAR CUMULATIVE INDEX WAS…

The fact that so many notions and principles set forth by Panizzi are still in evidence today is proof of his great contribution to present day cataloging. The comparisons made of the two sets of rules point out many contrasts and similarities. But even more significant is that, while reading the comparisons, one is constantly reminded of the…

Describes the use of fixed-length character strings for controlling the size of indexing vocabularies in information retrieval systems. An evaluation of digram and trigram encoding, using the Cranfield document test collection, is presented and the results are compared with the hashing and the right-hand truncation of the terms. (Author)

Indexes to literature published in English-language little magazines are analyzed for duplication and completeness of coverage, and the number of little magazines founded since 1900 is estimated to determine the extent of literary work accessible by means of indexes. A 50-item annotated list of information sources and 12 references are included.

Three indexes to a collection of 3204 documents in the field of chemistry were test searched. The indexes are a keyword from title index without added keywords, a keyword from title index with added keywords, and a single access point per document alphabetic subject index. The three indexes were searched by 14 graduate chemistry students with 66…

Reports on a comparative study of the postcoordinate retrieval effectiveness of Library of Congress Subject Headings and the Preserved Context Indexing System (PRECIS). Data are presented in six tables and one figure, and a reference list is included. (Author/JL)

Intended to provide the nursing community with a comparative analysis of four major computerized document retrieval systems and one manual system providing coverage of the nursing literature, this study compares the indexing vocabulary, database coverage, and retrieval performance of the Educational Resource Information Center (ERIC),…

Compares two full featured database management systems for bibliographic information in terms of programs and documentation; record creation and editing; online database citations; search procedures; access to references in external text files; sorting and printing functions; style sheets; indexes; and file operations. (four references) (CLB)

Introduces the multicharacter trie as an index structure that can improve the time needed for retrieving full-text materials stored on CD-ROMs. The advantages of this structure compared to other structures are described, and experimental results comparing it to the widely used B+ tree and other structures used for full-text retrieval are…

The relative effectiveness of the CD-ROM information retrieval system, InfoTrac II, and the manual "Readers' Guide to Periodical Literature," was studied. Seventeen community college students were divided into two groups which researched the same questions either on CD-ROM or in the printed index. Results showed the "Readers'…

Presents an evaluative analysis of five indexing/abstracting services covering sports and physical education. Data on the scope, arrangement, indexing language, journal coverage, subject access, special features, and use aids in each of the services are presented in four tables. (JL)

Investigates one component of a Web site--the index structure, comparing the effectiveness and efficiency of 20 subjects who used one index and three experimental variants to complete five tasks. Findings indicate that a hypertext index with multiple access points for each concept, all linked to the same resource, led to greater effectiveness and…

Examines online and printed equivalents of selected government documents indexes to compare the recall, precision, overlap, and cost effectiveness of online and manual searching. Indexes studied were the Monthly Catalog, CIS (Congressional Information Service) Index, and Government Reports Announcements and Index. (CLB)

With "Chemical Abstracts" and "Science Citation Index" both now available for citation searching, this study compares the duplication and uniqueness of citing references for works of chemistry researchers for the years 1999-2001. The two indexes cover very similar source material. This analysis of SciFinder Scholar and Web of…