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PAKDD
2005
ACM
164views Data Mining» more  PAKDD 2005»
14 years 5 months ago
Covariance and PCA for Categorical Variables
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