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Information Processing and… | 14 |
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Ramesh, R.; Drury, Colin G. – Information Processing and Management, 1987
Provides overview of Ergonomics Abstracts Retrieval System (EARS), an online bibliographic search and retrieval system in the area of human factors engineering. Other online systems are described, the design of EARS based on inverted file organization is explained, and system expansions including a thesaurus are discussed. (Author/LRW)
Descriptors: Human Factors Engineering, Indexing, Online Searching, Online Systems

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

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

Heine, M. H. – Information Processing and Management, 1988
Discusses the feasibility and advantages of developing an enhancement for document retrieval systems that would automatically impose Boolean syntax on an input set of search terms. An online specification for such an enhancement is presented, based on experimental results using the MEDLINE database. (13 references) (CLB)
Descriptors: Information Retrieval, Man Machine Systems, Online Searching, Search Strategies

Radecki, Tadeusz – Information Processing and Management, 1988
Discusses the inability of the standard Boolean logic model of information retrieval to deal effectively with the inherent fallibility of retrieval decisions. Recent advances in information retrieval research are reviewed, and their practical potential for overcoming the deficiencies of the Boolean model is examined. (45 references) (Author/CLB)
Descriptors: Online Searching, Online Vendors, Relevance (Information Retrieval), Research Utilization

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

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

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

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

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

Peters, B. F.; And Others – Information Processing and Management, 1989
Describes the development, implementation, and evaluation of a voice interface for the British Library Blaise Online Information Retrieval System. Results of the evaluation show that the use of currently available speech recognition and synthesis hardware, along with intelligent software, can provide an interface well suited to the needs of online…
Descriptors: Computer Software, Computer System Design, Foreign Countries, Input Output Devices

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

Blair, David C. – Information Processing and Management, 1988
Presents a relational logical model to support a sophisticated document retrieval system in which flexible forms of inferential and associative searching can be performed, and provides examples of ad hoc inquiries. Several problems of particular importance to document retrieval are discussed in terms of this model. (27 references) (Author/CLB)
Descriptors: Database Management Systems, Information Processing, Information Retrieval, Mathematical Models

Harman, Donna; And Others – Information Processing and Management, 1991
Built using a distributed architecture, this prototype distributed information retrieval system uses statistical ranking techniques to provide better service to the end user. Distributed architecture was shown to be a feasible alternative to centralized or CD-ROM information retrieval, and user testing of the ranking methodology showed both…
Descriptors: Access to Information, Computer System Design, Information Retrieval, Information Technology