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Experimental and Quasi-Experimental Designs for Research in Information Science.
Peer reviewed Peer reviewed
Haas, David F.; Kraft, Donald H. – Information Processing and Management, 1984
This paper examines representative research in information science and compares its designs to an abstract ideal of the experimental research design. Threats to validity of conclusions are highlighted, including history, maturation, testing, instrumentation, statistical regression, selection biases, experimental mortality, and selection-maturation…
Descriptors: Information Science, Models, Research Design, Research Methodology
Sign Detection Theory and Its Applications.
Peer reviewed Peer reviewed
Heine, M. H. – Information Processing and Management, 1984
Offers characterization of sign-transmission which is more general than conventional signal-transmission theory. Concepts and terminology, formal description of individual communications process, reconciliation with classical signal-detection theory, applications of sign-detection formalism to information retrieval on MEDLINE database, and a…
Descriptors: Algorithms, Cognitive Processes, Communication (Thought Transfer), Information Retrieval
Distributed Expert-Based Information Systems: An Interdisciplinary Approach.
Peer reviewed Peer reviewed
Belkin, Nicholas J.; And Others – Information Processing and Management, 1987
Based on an international workshop held at Rutgers University, this article discusses problems and issues in the design, research, and implementation of distributed expert-based information systems (DEBIS). Information needs of end users are stressed, architectures for expert information retrieval systems are explored, and prototype models are…
Descriptors: Expert Systems, Information Retrieval, Information Systems, Interdisciplinary Approach