Accession Number : ADA185747

Title :   Conjunctive Conceptual Clustering: A Methodology and Experimentation.

Descriptive Note : Doctoral thesis,

Corporate Author : ILLINOIS UNIV AT URBANA COORDINATED SCIENCE LAB

Personal Author(s) : Stepp, Robert E , III

PDF Url : ADA185747

Report Date : Sep 1987

Pagination or Media Count : 210

Abstract : This thesis describes a machine learning methodology called conjunctive conceptual clustering. The methodology can find conceptual patterns in data as illustrated by three sample problems. In one problem, the method is used to rediscover categories of soybean disease when given a collection of 47 descriptions of diseased soybeans having one of four diseases. In a second problem, the method is used to find categories underlying a collection of blocks-world structures. In a third problem, categories of objects having a more complex structure are determined and contrasted with categories generated by people. The described method of conjunctive conceptual clustering forms clusters of objects (or situations) not on the basis of a numerical similarity measure but on the basis of the conceptual cohesiveness of one object to another. The conceptual cohesiveness between two objects depends on the descriptions of the two objects as well as the descriptions of other nearby objects in the given collection and concepts which are available to describe object groups or object configurations as a whole.

Descriptors :   *LEARNING MACHINES, *DATA PROCESSING EQUIPMENT, *PATTERN RECOGNITION, COHESION, DISEASES, METHODOLOGY, PATTERNS, SOYBEANS, THESES, STATISTICAL DATA

Subject Categories : Cybernetics

Distribution Statement : APPROVED FOR PUBLIC RELEASE