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A General Coefficient of Similarity and Some of Its Properties
J. C. Gower
Vol. 27, No. 4 (Dec., 1971), pp. 857-871
Published by: International Biometric Society
Stable URL: http://www.jstor.org/stable/2528823
Page Count: 15
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A general coefficient measuring the similarity between two sampling units is defined. The matrix of similarities between all pairs of sample units is shown to be positive semidefinite (except possibly when there are missing values). This is important for the multidimensional Euclidean representation of the sample and also establishes some inequalities amongst the similarities relating three individuals. The definition is extended to cope with a hierarchy of characters.
Biometrics © 1971 International Biometric Society