Optimal discriminant functions for normal populations. - Hirofumi Wakaki; Makoto Aoshima (J. Multivar. Anal., 2009)

High-dimensional Edgeworth expansion of a test statistic on independence and its error bound. - Tomoyuki Akita; Jinghua Jin; Hirofumi Wakaki (J. Multivar. Anal., 2010)

Asymptotic expansions for a class of tests for a general covariance structure under a local alternative. - Hiroaki Shimizu; Hirofumi Wakaki (J. Multivar. Anal., 2011)

Optimization of Generalized Cp Criterion for Selecting Ridge Parameters in Generalized Ridge Regression. - Mineaki Ohishi; Hirokazu Yanagihara; Hirofumi Wakaki (KES-IDT, 2020)