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Losee, Robert M.; Bookstein, Abraham – Information Processing and Management, 1988
Presents a model that places Boolean database queries into conjunctive normal form, thereby allowing probabilistic ranking of documents and the incorporation of relevance feedback. Experimental results compare the performance of a sequential learning probabilistic retrieval model with the proposed integrated Boolean probabilistic model and a fuzzy…
Descriptors: Feedback, Information Retrieval, Mathematical Models, Online Searching
Peer reviewed Peer reviewed
Harman, Donna – Information Processing and Management, 1992
Six articles about evaluating information retrieval (IR) systems and methods are briefly described in this introduction to a special issue and some of the major problems that are encountered in evaluating interactive information retrieval are considered. (two references) (LAE)
Descriptors: Evaluation Methods, Experiments, Information Retrieval, Online Searching
Peer reviewed Peer reviewed
Su, Louise T. – Information Processing and Management, 1992
Research designed to identify the best evaluation measure(s) for interactive information retrieval (IR) performance studied 20 measures in a natural IR environment with 40 real end users. These users found overall search value to be the most important factor and recall was more important than precision. Additional evaluation criteria are suggested…
Descriptors: Evaluation Criteria, Information Retrieval, Online Searching, Relevance (Information Retrieval)
Peer reviewed Peer reviewed
Radecki, Tadeusz – Information Processing and Management, 1988
A theoretical framework used to derive a weighting mechanism for ranking output documents in Boolean retrieval systems is described in detail. A simple illustrative example is included, and the implications of such an approach are discussed. (64 references) (Author/CLB)
Descriptors: Feedback, Functions (Mathematics), Information Retrieval, Mathematical Models
Peer reviewed Peer reviewed
Fuhr, Norbert – Information Processing and Management, 1989
Describes three models for probabilistic indexing, all based on the Darmstadt automatic indexing approach, and presents experimental evaluation results for each. The discussion covers the improved retrieval effectiveness of probabilistic indexing over binary indexing, and suggestions for using this automatic indexing method with free text terms.…
Descriptors: Automatic Indexing, Comparative Analysis, Information Retrieval, Mathematical Formulas
Peer reviewed Peer reviewed
Gauch, Susan; Smith, John B. – Information Processing and Management, 1989
Describes a project that is developing an intelligent search intermediary to help users locate relevant passages in large full text databases. (The system automatically reformulates Boolean queries to improve search results and presents retrieved passages in decreasing order of estimated relevance.) The current status of the project and plans for…
Descriptors: Expert Systems, Full Text Databases, Information Retrieval, Online Searching
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
Peer reviewed Peer reviewed
Gordon, Michael D. – Information Processing and Management, 1988
Describes the three subsystems of an information retrieval system (document descriptions, queries, and matching algorithms) and argues that the interdependency of these subsystems requires adaptation for the system to perform when any component changes. An algorithm for redescribing documents, in response to changes in queries and retrieval rules,…
Descriptors: Algorithms, Feedback, Information Retrieval, Models
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Blair, David C. – Information Processing and Management, 1986
Discusses indeterminancy of selection of terms by indexers and by inquirers as major factors influencing subject access to documents in document retrieval systems. Five types of interactions between these two indeterminancies are discussed, and a change in traditional method of subject searching is suggested to reduce effect of inter-indexer…
Descriptors: Databases, Indexing, Information Retrieval, Mathematical Formulas
Peer reviewed Peer reviewed
Noerr, Peter L.; Noerr, Kathleen T. Bivins – Information Processing and Management, 1985
Discussion of database design that allows wider range of capabilities than conventional information retrieval database covers prestructuring of searches to pinpoint target items, which are selected from browseable display, and navigation capability, which allows user to move from record to record within database to facilitate extraction of…
Descriptors: Databases, Display Systems, Information Retrieval, Information Systems
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Salton, G. – Information Processing and Management, 1988
Describes a new Boolean retrieval environment in which an extended soft Boolean logic is used to automatically construct queries from original natural language formulations provided by users. Experimental results that compare the retrieval effectiveness of this method to conventional Boolean and vector processing are discussed. (27 references)…
Descriptors: Comparative Analysis, Information Retrieval, Mathematical Models, Online Searching
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Deogun, Jitender S.; Raghavan, Vijay V. – Information Processing and Management, 1988
Discusses the motivation for integrating information retrieval and database management systems, and proposes a probabilistic retrieval model in which records in a file may be composed of attributes (formatted data items) and descriptors (content indicators). The details and resolutions of difficulties involved in integrating such systems are…
Descriptors: Database Management Systems, Feedback, Information Retrieval, Mathematical Models
Peer reviewed Peer reviewed
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
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Damerau, Fred J. – Information Processing and Management, 1988
Discusses the potential sources of knowledge for customizing transportable natural language query systems, including sophisticated dictionaries, database content, and human database experts. A rough quantification of the importance of each source is provided. (17 references) (Author/CLB)
Descriptors: Databases, Dictionaries, Information Retrieval, Online Searching
Peer reviewed Peer reviewed
Morrissey, J. M.; And Others – Information Processing and Management, 1986
Proposes a "Model of Querying" for users of office filing facilities and discusses its motivation, aspects, attributes, and advantages. A review of current information systems and attempts to combine information retrieval, artificial intelligence, and database management techniques leads to conclusion that no resultant system is adequate…
Descriptors: Artificial Intelligence, Comparative Analysis, Database Management Systems, Databases
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