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Yiran Chen – Research in Higher Education, 2025
The "k"-means clustering method, while widely embraced in college student typology research, is often misunderstood and misapplied. Many researchers regard "k"-means as a near-universal solution for uncovering homogeneous student groups, believing its success hinges primarily on the selection of an appropriate "k."…
Descriptors: College Students, Classification, Educational Research, Research Methodology
Kohn, Hans-Friedrich; Steinley, Douglas; Brusco, Michael J. – Psychological Methods, 2010
The "p"-median clustering model represents a combinatorial approach to partition data sets into disjoint, nonhierarchical groups. Object classes are constructed around "exemplars", that is, manifest objects in the data set, with the remaining instances assigned to their closest cluster centers. Effective, state-of-the-art implementations of…
Descriptors: Computer Software, Psychological Studies, Data Analysis, Research Methodology
Dorans, Neil J. – 1985
Two reduced rank classification procedures, principal components classification and equal weights classification, are described and compared by a simulation study to the standard classification procedure to determine their feasibilities as alternative classification procedures. A justification for the development of these two reduced rank…
Descriptors: Classification, Cluster Grouping, Research Methodology, Simulation
McQuitty, Louis L. – Educ Psychol Meas, 1970
A method is described for bifurcating a matrix of objects into two submatrices such that the sum of average deviations of the members from the central tendencies of the two submatrices is minimized. Illustrations of the procedure are included. (DG)
Descriptors: Classification, Cluster Grouping, Groups, Organization
Harman, Harry H. – 1971
This is a methodological study that suggests a taxometric technique for objective classification of yeasts. It makes use of the minres method of factor analysis and groups strains of yeast according to their factor profiles. The similarities are judged in the higher-dimensional space determined by the factor analysis, but otherwise rely on the…
Descriptors: Classification, Cluster Grouping, Factor Analysis, Food Standards

Denney, Nancy Wadsworth – Child Development, 1972
Study concerned with the effects of procedural differences on the classification of geometrical stimuli. (Author)
Descriptors: Age Differences, Associative Learning, Classification, Cluster Grouping

Overton, Willis F.; Brodzinsky, David – Developmental Psychology, 1972
The development of multiplicative classificatory skills in children between 4 and 9 years of age was investigated by means of two forms of the matrix-completion task. (Authors)
Descriptors: Classification, Cluster Grouping, Cognitive Development, Developmental Psychology

Bergman, Lars R. – Multivariate Behavioral Research, 1988
When performing a classification study, it is often useful to leave a residue of unclassified entities to be analyzed separately. Using an interactional paradigm, theoretical reasoning for this approach is outlined. A procedure--RESIDAN--for conducting a classification analysis using a residue is described, and empirical data are provided. (TJH)
Descriptors: Classification, Cluster Analysis, Cluster Grouping, Error of Measurement

Frankel, Marc T.; Rollins, Howard A., Jr. – Journal of Experimental Child Psychology, 1982
Investigates why children under eight years of age show categorical clustering above chance expectations in free recall, when such organization does not correlate with recall. Six-year-old children and adults were tested for memory of 24 pictures of categorizable items. Proportion of items recalled in category strings and number of strings of each…
Descriptors: Adults, Age Differences, Classification, Cluster Grouping

Wachs, Theodore D.; Gruen, Gerald E. – Child Development, 1971
Results indicated that availability of categories rather than frequency of words seemed most crucial in determining developmental changes in clustering efficiency. (Authors)
Descriptors: Age Differences, Analysis of Variance, Classification, Cluster Grouping

Rabinowitz, Mitchell; Mandler, Jean M. – Journal of Experimental Psychology: Learning, Memory, and Cognition, 1983
Two experiments explored the differential effects of two kinds of organization (taxonomic and schematic) on retrieval of information. (Author/PN)
Descriptors: Classification, Cluster Grouping, College Students, Higher Education
Pearlman, Kenneth – 1978
This report reviews the personnel literature on the development of job families to illustrate and provide examples of varied approaches to the taxonomic issues of objective, content, and method in job family construction. This booklet first examines the definition of job families and then briefly discusses the potential utility of job families.…
Descriptors: Citations (References), Classification, Cluster Grouping, Group Structure
Nunn, Richard; Lain, Lindy – 1975
Empirical techniques are developed that may be used in conjunction with data stored in the Institutional Profile System to enhance present capabilities of assessing group structure in medical schools. Relevant literature is reviewed, and the institutionally descriptive data available for analysis and their manipulation into researchable formats…
Descriptors: Classification, Cluster Grouping, Factor Analysis, Higher Education
Sinclair, Bill; Manderscheid, Lester V. – 1974
Eleven indexes of rurality and their effect on the classification of Michigan's 83 counties were investigated. The indexes were based on different concepts of rurality: (1) percent of employment in agriculture, fishing, and forestry; (2) population density and distance to urban centers; and (3) economic conditions. Index rankings were compared to…
Descriptors: Agriculture, Classification, Cluster Grouping, Comparative Analysis
Shafto, Michael – 1972
The purpose of this paper is to suggest a technique of cluster analysis which is similar in aim to the Interactive Intercolumnar Correlation Analysis (IICA), though different in detail. Two methods are proposed for extracting a single bipolar factor (a "contrast compenent") directly from the initial similarities matrix. The advantages of this…
Descriptors: Bibliographies, Classification, Cluster Analysis, Cluster Grouping
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