5 papers
A Bregman inertial iteratively regularized extragradient method for bilevel variational inequality problems
Kangming Chen, Atsushi Hori, Ellen H. Fukuda
In this paper, we consider bilevel variational inequality problems, where the feasible set is the solution set of another variational inequality. We propose a Bregman inertial regu…
A Regularized Nikaido-Isoda Function Approach to Multi-Leader-Follower Games
Atsushi Hori, Takayuki Okuno, Ellen H. Fukuda
A multi-leader--follower game (MLFG) is a hierarchical noncooperative game in which leaders compete at the upper level while taking into account the followers' best responses at th…
A closer target setting approach to boundary problems with the Russell graph measure
Atsushi Hori, Kazuyuki Sekitani
A Russell graph measure (RGM) is one of the standard DEA models, but its efficiency measure is not well-defined--or has unacceptable properties--at the boundary of the nonnegative…
Variants of the slacks-based measure with assurance region and zeros in input-output data
Atsushi Hori, Kazuyuki Sekitani
Incorporating an assurance region (AR) into the slacks-based measure (SBM) improves practicality; however, its efficiency measure may not have desirable properties, such as monoton…
A method for multi-leader-multi-follower games by smoothing the followers' response function
Atsushi Hori, Daisuke Tsuyuguchi, Ellen H. Fukuda
The multi-leader--multi-follower game (MLMFG) involves two or more leaders and followers and serves as a generalization of the Stackelberg game and the single-leader--multi-followe…