Operations Research Transactions ›› 2022, Vol. 26 ›› Issue (2): 101-110.doi: 10.15960/j.cnki.issn.1007-6093.2022.02.009

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Population monotonic allocation schemes for shortest path games

Zerong CHEN1, Han XIAO1,*()   

  1. 1. School of Mathematical Sciences, Ocean University of China, Qingdao 266100, Shandong, China
  • Received:2020-07-29 Online:2022-06-15 Published:2022-05-27
  • Contact: Han XIAO E-mail:hxiao@ouc.edu.cn

Abstract:

Population monotonic allocation schemes (PMAS-es for short) are allocation schemes for cooperative games. PMAS-es provide a core allocation for each subgame in a cross monotonic way and hence ensure the dynamic stability of the grand coalition. This paper investigates PMAS-es for cooperative cost games arising from the shortest path problem. We provide a dual-based combinatorial characterization for PMAS-es of shortest path games. Inspired by Maschler scheme for computing the nucleolus, we show that a PMAS can be determined by solving a linear program of exponential size. Moreover, we manage to solve the linear program and derive the same PMAS as the combinatorial method earlier for shortest path games.

Key words: cooperative game theory, population monotonic allocation scheme, shortest path problem, linear programming

CLC Number: