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Updated: Jul 5, 2026

A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments
Published on: March 1, 2022
On distributional assumptions and whitened cosine similarities
1Pattern Recognition Group, Faculty of Elctrical Engineering, Mathematics and Computer Science, Delft Unversity of Technology, Delf, The Netherlands. m.loog@tudelft.nl
Abstract:
Recently, an interpretation of the whitened cosine similarity measure as a Bayes decision rule was proposed (C. Liu, "The Bayes Decision Rule Induced Similarity Measures,'' IEEE Trans. Pattern Analysis and Machine Intelligence, vol. 29, no. 6, pp. 1086-1090, June 2007. This communication makes the observation that some of the distributional assumptions made to derive this measure are very restrictive and, considered simultaneously, even inconsistent.
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