Sou Matsuura

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Recent studies in category learning have shown that there are shifts in category representation. In the present study, we develop three models categorization that consisted of different learning objectives to examine cognitive mechanism underlying the representational shifts. The results of simulation indicated that the representational shift observed in(More)
The k-principal points of a distribution are the k points that optimally partition the distribution. In this paper, we propose a method to estimate principal points from data by using mixture distributions when we have no prior knowledge of the distribution of data. Several simulation results are presented to compare the proposed method with the(More)
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