3 papers
math.OC2026
A Unified Maximum-Margin Framework for Data Envelopment Analysis: Theoretical Foundations and Numerical Evidence
Teruki Akahoshi, Hiroki Ueda, Tomonari Kitahara
Data Envelopment Analysis (DEA) is a widely used non-parametric method for evaluating the relative efficiency of decision-making units (DMUs). However, the classic Charnes-Cooper-R…
math.OC2026
Bounds for the number of basic feasible solutions generated by the simplex method with the largest distance rule
Tomonari Kitahara
In this paper, we analyze the simplex method with the largest distance rule and derive upper bounds on the number of different basic feasible solutions generated. The pivoting rule…
math.OC2024
Enhancing Top Efficiency by Minimizing Second-Best Scores: A Novel Perspective on Super Efficiency Models in DEA
Tomonari Kitahara, Takashi Tsuchiya
In this paper, we reveal a new characterization of the super-efficiency model for Data Envelopment Analysis (DEA). In DEA, the efficiency of each decision making unit (DMU) is meas…