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Selecting Signature Files for Specific Applications.
Peer reviewed Peer reviewed
Tiberio, Paolo; Zezula, Pavel – Information Processing and Management, 1993
Summarizes the best known methods of using the signature file access method as a storage structure in information retrieval in nonbusiness applications of multimedia data. The relationships between application area, type of data, and signature file organization are emphasized. Results are summarized in a selection guide. (Contains 26 references.)…
Descriptors: Comparative Analysis, Database Design, Databases, Evaluation Criteria
On the Non-Random Nature of Nearest-Neighbour Document Clusters.
Peer reviewed Peer reviewed
Shaw, Rachel J.; Willett, Peter – Information Processing and Management, 1993
Examines research on the observed values of retrieval effectiveness obtained in searches of files of nearest neighbor document clusters. Results show interdocument similarities used to generate nearest-neighbor clusters are significantly different from randomly generated clusters. (Contains 14 references.) (EAM)
Descriptors: Bibliographic Records, Cluster Analysis, Comparative Analysis, Information Retrieval
Probabilistic Design Principles for Conventional and Full-Text Retrieval Systems.
Peer reviewed Peer reviewed
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
Information Retrieval from Hypertext: An Approach Using Plausible Inference.
Peer reviewed Peer reviewed
Lucarella, Dario; Zanzi, Antonella – Information Processing and Management, 1993
Discusses approaches to the integration of query-based information retrieval and browsing in a hypertext network. A prototype system developed to evaluate the proposed approach in terms of retrieval effectiveness and search efficiency is presented, and design and implementation issues concerning the prototype are considered. (30 references) (EA)
Descriptors: Computer System Design, Evaluation Methods, Hypermedia, Inferences
Getting beyond Boole.
Peer reviewed Peer reviewed
Cooper, William S. – Information Processing and Management, 1988
Describes several problems encountered when using the Boolean model of information retrieval, and for each problem offers a nontraditional design principle that overcomes the difficulty. The problems discussed are the unfriendliness of Boolean formulas, null output and output overload, undifferentiated facets, interpreting weights, and term…
Descriptors: Evaluation Criteria, Information Retrieval, Online Searching, Performance Factors
Recent Trends in Hierarchic Document Clustering: A Critical Review.
Peer reviewed Peer reviewed
Willett, Peter – Information Processing and Management, 1988
Reviews recent research into the use of hierarchic agglomerative clustering methods for document retrieval. The topics discussed include the calculation of interdocument similarities, algorithms used to implement clustering methods on large databases, validity testing of document hierarchies, appropriate search strategies, and other applications…
Descriptors: Algorithms, Bibliometrics, Cluster Analysis, Comparative Analysis
Knowledge Gateways: The Building Blocks.
Peer reviewed Peer reviewed
Hawkins, Donald T.; And Others – Information Processing and Management, 1988
Discusses the need for knowledge gateway systems to provide access to scattered information and the use of technologies in gateway building, including artificial intelligence and expert systems, networking, online retrieval systems, optical storage, and natural language processing. The status of four existing gateways is described. (20 references)…
Descriptors: Artificial Intelligence, Information Networks, Information Retrieval, Information Technology