Memory boosts turn taking in evolutionary dilemma games

Tao Wang; Zhigang Chen; Lei Yang; You Zou; Juan Luo

doi:10.1016/j.biosystems.2015.03.006

Memory boosts turn taking in evolutionary dilemma games

Biosystems. 2015 May:131:30-9. doi: 10.1016/j.biosystems.2015.03.006. Epub 2015 Apr 1.

Authors

Tao Wang¹, Zhigang Chen², Lei Yang³, You Zou⁴, Juan Luo³

Affiliations

¹ College of Computer Science and Electronic Engineering, Hunan University, Changsha 410082, China. Electronic address: wangtao1999@foxmail.com.
² School of Software, Central South University, Changsha 410083, China.
³ College of Computer Science and Electronic Engineering, Hunan University, Changsha 410082, China.
⁴ High Performance Computing Center, Central South University, Changsha 410083, China.

PMID: 25841617
DOI: 10.1016/j.biosystems.2015.03.006

Abstract

Spontaneous turn taking phenomenon can be observed in many self-organized systems, and the mechanism is unclear. This paper tries to model it by evolutionary dilemma games with memory mechanism. Prisoner's dilemma, Snowdrift (including Leader and Hero) and Stag-hunt games are unified on an extended S-T plane. Agents play game with all the others and make decision by the last game histories. The experiments find that when agents remember last 2-step histories or more, a kind of cooperative turn taking (CAD) bursts at the area of Snowdrift game with restriction of S + T > 2R and S ≠ T, while the consistent strategy (DorC) gathers on the line of S + T > 2R and S = T. We also find that the system's fitness ratio greatly improved with 2-step memory.

Keywords: Cooperation; P reciprocity; R reciprocity; ST reciprocity; TFT; WSLS.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Biological Evolution*
Cooperative Behavior*
Game Theory*
Games, Experimental*
Humans
Memory*
Models, Theoretical*
Systems Biology