Hierarchical importance sampling instead of annealing. - Takayuki Higo; Keiki Takadama (IEEE Congress on Evolutionary Computation, 2007)

Maintaining Multiple Populations with Different Diversities for Evolutionary Optimization Based on Probability Models. - Takayuki Higo; Keiki Takadama (Inf. Media Technol., 2008)

Importance sampling regularization for estimation of distribution algorithms. - Takayuki Higo (GECCO (Companion), 2011)