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Indexed by:期刊论文

Date of Publication:2014-08-15

Journal:PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS

Included Journals:SCIE、EI、Scopus

Volume:408

Page Number:181-189

ISSN No.:0378-4371

Key Words:Interaction willingness; Imitation-induced adjustment; Cooperation promotion; Prisoner's dilemma

Abstract:In real societies, whether an individual participates in unpromising interactions sometimes is a probabilistic option instead of an all-or-nothing option, changing according to the risk of interactions. Inspired by this, we introduce an imitation-induced adjustment mechanism of individual willingness to interact into the spatial prisoner's dilemma game, where an individual decreases its willingness to interact when it imitates others and increases when it is imitated by others. The adjustment value at each time interval is defined as the adjustment sensitivity of individual willingness to interact. Extensive simulation results show that the proposed mechanism can promote cooperation effectively, and a higher adjustment sensitivity has a more positive influence on the maintenance of cooperation. This promotion is mainly because the survived cooperators can resist the invasion of defectors, through interacting with defectors with lower willingness to interact around them: Finally, the generality of this promotion is testified in two additional scenarios. (C) 2014 Elsevier B.V. All rights reserved.