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Merry, Susan; And Others – Database, 1989
Provides an overview of the Canadian business environment and online sources of business information. The databases described cover the following areas: directories, financial information, stock quotes, investment reports, industrial and economic information, magazines, newspapers, wire services, biographical information, and government…
Descriptors: Bibliographic Databases, Business, Copyrights, Database Producers
Hensley, Colin – Database, 1989
Describes three groups of databases sponsored by the European Communities Commission: Eurobases, a textual database of the contents of the "Official Journal" of the European Community; the European Community Host Organization (ECHO) databases, which offer multilingual information about Europe; and statistical databases. Information on…
Descriptors: Bibliographic Databases, Foreign Countries, Full Text Databases, Information Retrieval

Stein, Mark J.; Sheridan, Christine R. – Online Review, 1990
Examines problems encountered when setting up a hypertext link, called an identity link, for moving between bibliographic and full text databases. MEDLINE and CCML (Comprehensive Core Medical Library) are used as examples, BRS/SEARCH text retrieval software is explained, and problems with syntax are discussed. (two references) (LRW)
Descriptors: Bibliographic Databases, Computer Software, Full Text Databases, Hypermedia

Burkowski, Forbes J. – Information Processing and Management, 1992
Describes a hierarchical text database model and defines an algebra based on concordance lists. The algebra is presented as a theoretical model to define both a conceptual schema for the database and search protocols for database implementation. Several retrieval examples are included. (19 references) (MES)
Descriptors: Algebra, Database Design, Full Text Databases, Information Retrieval

Moffat, Alistair; And Others – Information Processing & Management, 1994
Describes an approximate document ranking process that uses a compact array of in-memory, low-precision approximations for document length. Combined with another rule for reducing the memory required by partial similarity accumulators, the approximation heuristic allows the ranking of large document collections using less than one byte of memory…
Descriptors: Database Design, Database Management Systems, Full Text Databases, Information Retrieval

Nelson, Michael J. – Information Processing & Management, 1997
Applies a prefix trie index, or trie hashing, to the problem of providing fast search times, fast load times, and fast update properties in a bibliographic or full-text retrieval system with inverted files. Statistics are given for a test database consisting of an online catalog at the University of Western Ontario. (Author/LRW)
Descriptors: Bibliographic Databases, Full Text Databases, Indexing, Information Retrieval

McCarn, Davis B.; Lewis, Craig M. – Journal of the American Society for Information Science, 1990
Reviews selected research on the performance of bibliographic and full-text databases. A mathematical model for clarification of the relationship between user behavior and the performance measures of recall and precision is presented. (five references) (MES)
Descriptors: Bibliographic Databases, Full Text Databases, Information Retrieval, Mathematical Models

Kent, A.; And Others – Journal of the American Society for Information Science, 1990
Describes a new signature file method, called the multiorganizational scheme, for accessing information from large databases containing both formatted and free-text data. Implementation issues are discussed, and computational results based on a mathematical model are presented, as well as results using a library database. (43 references) (MES)
Descriptors: Bibliographic Databases, Full Text Databases, Information Retrieval, Library Research
Tenopir, Carol; Hover, Katie – Online, 1993
Examines how online versions of databases vary on different systems. Differences are grouped into three categories: obvious differences, including easily available information such as updating, dates covered, and price; database choice, including subfile structure, field structure, and content; and system choice, including support and system…
Descriptors: Bibliographic Databases, Full Text Databases, Graphs, Information Retrieval
Library of Congress, Washington, DC. Network Development and MARC Standards Office. – 1989
The seven papers in these proceedings focus on the characteristics and potentials of non-bibliographic databases in the context of library and commercial networks. Following an introduction by Sandra K. Paul, this report presents the individual papers: (1) "User Perspectives and Requirements: Creator of Non-Bibliographic Databases Has To Share…
Descriptors: Bibliographic Databases, Computer Networks, Full Text Databases, Information Networks

Salminen, Airi; Watters, Carolyn – Journal of the American Society for Information Science, 1992
Introduces a hypertext data model for textual databases in which the text is divided into a syntactic structure, which describes the relationships of the text parts, and an access structure, which is generated from the syntactic structure by users' queries. Implementation considerations for the structuring component, retrieval component, and…
Descriptors: Context Free Grammar, Database Design, Full Text Databases, Hypermedia

Maron, M. E. – Information Processing and Management, 1988
Discusses the probabilistic nature of information retrieval, and describes a front end system designed to permit searchers to attach probabilistically interpreted weights to query terms, which could be adapted for conventional information retrieval systems without requiring radical changes in current indexing procedures. (37 references) (CLB)
Descriptors: Bibliographic Databases, Design Requirements, Full Text Databases, Information Retrieval
Pritchard-Schoch, Patricia – Online, 1993
Discusses natural language retrieval systems, focusing on West Publishing Company's WIN (Westlaw Is Natural) system used with its case law database. Information retrieval models, the advantages and disadvantages of natural language retrieval, and the use of the approach by Congressional Quarterly's Washington Alert, Personal Librarian, and other…
Descriptors: Computer Software, Court Litigation, Database Producers, Full Text Databases
Fidel, Raya – School Library Media Quarterly, 1989
Reviews the literature that examines new capabilities and new problems associated with online catalogs, online searching of bibliographic databases, indexing, full text retrieval, and expert systems. The need for research that focuses on individual needs and that adopts an integrated approach which views indexing and retrieval as interrelated…
Descriptors: Bibliographic Databases, Expert Systems, Full Text Databases, Indexing

Fox, Edward A.; Koll, Matthew B. – Information Processing and Management, 1988
Provides an overview of methods for improving the effectiveness of Boolean retrieval systems, including document clustering, relevance feedback, weighted term searching, ranked output, and fuzzy set theory. The discussion of experimental studies with the SMART and SIRE systems focuses on the implementation and results of these methods. (69…
Descriptors: Bibliographic Databases, Comparative Analysis, Feedback, Full Text Databases