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115
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PAKDD
2005
ACM
164
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Data Mining
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PAKDD 2005
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Covariance and PCA for Categorical Variables
15 years 9 months ago
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hp.vector.co.jp
Covariances from categorical variables are defined using a regular simplex expression for categories. The method follows the variance definition by Gini, and it gives the covaria...
Hirotaka Niitsuma, Takashi Okada
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