Analytic Optimization of Shrinkage Parameters Based on Regularized Subspace Information Criterion. - Masashi Sugiyama; Keisuke Sakurai (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2006)

An Online Semi-supervised Active Learning Algorithm with Self-organiing Incremental Neural Network. - Shen Furao; Keisuke Sakurai; Youki Kamiya; Osamu Hasegawa (IJCNN, 2007)

Analytic Optimization of Adaptive Ridge Parameters Based on Regularized Subspace Information Criterion. - Shun Gokita; Masashi Sugiyama; Keisuke Sakurai (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2007)

An incremental online semi-supervised active learning algorithm based on self-organizing incremental neural network. - Furao Shen; Hui Yu; Keisuke Sakurai; Osamu Hasegawa (Neural Comput. Appl., 2011)