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D. M. Titterington, Department of Statistics, University of Glasgow, Glasgow G12 8QW, Scotland.
In the above correspondence1 a maximum likelihood method is proposed for ``estimating'' class memberships and underlying statistical parameters, within the context of distribution mixtures. In the present comment it is pointed out that biases are incurred in parameter estimation, that the class memberships and parameters are conceptually different, and therefore that the so-called standard mixture likelihood is to be preferred. Also in the correspondence,1 Akaike's information criterion (AIC) is used to choose the number of classes in the mixture. Here a brief theoretical caveat is issued.
Citation:
D. M. Titterington, "Comments on ``Application of the Conditional Population-Mixture Model to Image Segmentation''," IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 6, no. 5, pp. 656-658, May 1984, doi:10.1109/TPAMI.1984.4767581
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