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Empirical Laws and Theories of Information and Software Sciences.
Peer reviewed Peer reviewed
Zunde, Pranas – Information Processing and Management, 1984
Reviews what information and software sciences have thus far accomplished in search for empirical regularities and laws and examines what theories have been developed to explain and account for regularities and laws. Specific laws and theories of information highlighted are those of Zipf, Bradford, Lotka, Mandelbrot, and Simon. (Forty references)…
Descriptors: Algorithms, Computer Software, Equations (Mathematics), Information Science
Analysis of Arithmetic Coding for Data Compression.
Peer reviewed Peer reviewed
Howard, Paul G.; Vitter, Jeffrey Scott – Information Processing and Management, 1992
Analyzes the amount of compression possible when arithmetic coding is used for text compression in conjunction with various input models. Algorithms are analyzed; modeling effects are considered; scaling is discussed; higher order models are examined, including prediction by partial matching; and coding effects are described. (34 references) (LRW)
Descriptors: Algorithms, Coding, Computation, Information Processing
The Measurement of Information.
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Harmon, Glynn – Information Processing and Management, 1984
Views information as residual or catalytic form of energy which regulates other forms of energy in natural and artificial systems. Parallel human information processing (production systems, algorithms, heuristics) and information measurement are discussed. Suggestions for future research in area of parallel information processing include a matrix…
Descriptors: Algorithms, Cognitive Processes, Energy, Heuristics
Problem Solving Techniques for the Design of Algorithms.
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Kant, Elaine; Newell, Allen – Information Processing and Management, 1984
Presents model of algorithm design (activity in software development) based on analysis of protocols of two subjects designing three convex hull algorithms. Automation methods, methods for studying algorithm design, role of discovery in problem solving, and comparison of different designs of case study according to model are highlighted.…
Descriptors: Algorithms, Automation, Case Studies, Comparative Analysis
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
A Systematic Approach to Compressing a Full-Text Retrieval System.
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Bookstein, Abraham; And Others – Information Processing and Management, 1992
Discusses the problems of compressing a large textual database for storage on CD-ROM. A text-compression algorithm is presented, new algorithms for compression of indices are described, and the ARTFL (American and French Research on the Treasury of the French Language) database is used as an example. (14 references) (LRW)
Descriptors: Algorithms, Coding, Full Text Databases, Indexes
Coding for Recording and Recall of Information.
Peer reviewed Peer reviewed
Kochen, Manfred – Information Processing and Management, 1984
Explores potential of mathematical theory of communication for information science and examines question of how to encode a message at time it is encountered for subsequent recall. Examples of problem, a prototype computer program and experiment, coding as embedding in associational nets, and nature of information are discussed. (Nine references.)…
Descriptors: Algorithms, Communication (Thought Transfer), Computer Software, Information Retrieval