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Pairwise Partitioning: A Nonmetric Algorithm for Identifying Feature-Based Similarity Structures

Published online by Cambridge University Press:  01 January 2025

J. Wesley Hutchinson*
Affiliation:
University of Florida University of Pennsylvania
Amitabh Mungale
Affiliation:
Rutgers University
*
Requests for reprints should be sent to Wes Hutchinson, Marketing Department, 1457 SHDH, University of Pennsylvania, Philadelphia, PA 19104.

Abstract

Pairwise partitioning is a nonmetric, divisive algorithm, for identifying feature structures based on pairwise similarities. For errorless data, this algorithm is shown to identify only (and sometimes all) valid features for certain hierarchical and multidimensional feature structures. Unfortunately, the algorithm is also extremely sensitive to error in the data. Fortunately, several modifications of the algorithm are shown to compensate significantly for this deficiency. The algorithm is illustrated with simulations and analyses of three sets of similarity data. The results suggest that this algorithm will be most useful (a) as an exploratory tool for generating a relatively large set of potential features that can be reduced using other criteria (either statistical or substantive) and (b) as a source of confirmatory or disconfirmatory evidence.

Information

Type
Original Paper
Copyright
Copyright © 1997 The Psychometric Society

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