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Methodologies for Subject Analysis in Bibliographic Databases.
Peer reviewed Peer reviewed
Milstead, Jessica L. – Information Processing and Management, 1992
Examines current activities in subject analysis of large bibliographic databases to assist database managers in making cost-effective decisions. Issues addressed include manual indexing aids, automatic indexing, and connecting indexing terms. Several software packages are described, and future research directions are suggested. (58 references)…
Descriptors: Automatic Indexing, Bibliographic Databases, Computer Software, Cost Effectiveness
Retrieving Records from a Gigabyte of Text on a Minicomputer Using Statistical Ranking.
Peer reviewed Peer reviewed
Harman, Donna; Candela, Gerald – Journal of the American Society for Information Science, 1990
Describes the advantages of a prototype retrieval system that uses statistically based ranked retrieval of records rather than traditional boolean methods, especially for end users. Several new techniques are also discussed including bit mapping, pruning, methods of building inverted files, and types of search engine. (26 references) (EAM)
Descriptors: Algorithms, Automatic Indexing, Bibliographic Databases, Minicomputers
Matching of Citations between Non-Standardized Databases.
Peer reviewed Peer reviewed
Yannakoudakis, E. J.; And Others – Journal of the American Society for Information Science, 1990
Presents an approach to automatic matching and linkage of citations between databases which applied 14 coding techniques and measured their effectiveness in terms of efficiency of retrieval of duplicates with minimal false hits, reliability, and performance. (EAM)
Descriptors: Algorithms, Automatic Indexing, Bibliographic Coupling, Bibliographic Databases
Inclusion of Relevance Information in the Term Discrimination Model.
Peer reviewed Peer reviewed
Biru, Tesfaye; And Others – Journal of Documentation, 1989
Discusses the effect of including relevance data on the calculation of term discrimination values in bibliographic databases. Algorithms that calculate the ability of index terms to discriminate between relevant and non-relevant documents are described and tested. The results are discussed in terms of the relationship between term frequency and…
Descriptors: Algorithms, Automatic Indexing, Bibliographic Databases, Mathematical Models
Bibliographic Pattern Matching Using the ICL Distributed Array Processor.
Peer reviewed Peer reviewed
Carroll, David M.; And Others – Journal of the American Society for Information Science, 1988
Describes the use of a highly parallel array processor for pattern matching operations in a bibliographic retrieval system. The discussion covers the hardware and software features of the processor, the pattern matching algorithm used, and the results of experimental tests of the system. (37 references) (Author/CLB)
Descriptors: Algorithms, Automatic Indexing, Bibliographic Databases, Computational Linguistics
CINDI: A Virtual Library Indexing and Discovery System.
Peer reviewed Peer reviewed
Desai, Bipin C.; Shinghal, Raijan; Shayan, Nader R.; Zhou, Youquan – Library Trends, 1999
Describes a system called CINDI (Concordia INdexing and DIscovery System) for cataloging and searching documents in a distributed virtual library. The document author registers metadata in the form of a semantic header that contains information on syntactic and semantic content, and an expert system fills the semantic header according to accepted…
Descriptors: Automatic Indexing, Bibliographic Databases, Cataloging, Electronic Libraries
Retrieval Testing with Hypergeometric Document Models.
Peer reviewed Peer reviewed
Wilbur, W. John – Journal of the American Society for Information Science, 1993
Presents a method of modeling the relevance relationship in information retrieval to answer the question of the theoretical limits of certain statistical methods. Hypergeometric probability distribution is used to construct an abstract model of a database of MEDLINE records, and results of tests of vector retrieval methods are reported. (28…
Descriptors: Automatic Indexing, Bayesian Statistics, Bibliographic Databases, Expert Systems