PCA-guided k-Means clustering with incomplete data. - Katsuhiro Honda; Ryoichi Nonoguchi; Akira Notsu; Hidetomo Ichihashi (FUZZ-IEEE, 2011)

Cluster validation in k-Means clustering of mixed databases based on principal component analysis. - Ryoichi Nonoguchi; Katsuhiro Honda; Akira Notsu; Hidetomo Ichihashi (SCIS&ISIS, 2012)