Universität zu Köln

Hadzibeganovic, Tarik, Lima, F. Welington S. and Stauffer, Dietrich (2012). Evolution of tag-mediated altruistic behavior in one-shot encounters on large-scale complex networks. Comput. Phys. Commun., 183 (11). S. 2315 - 2322. AMSTERDAM: ELSEVIER. ISSN 1879-2944

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Abstract

An agent-based evolutionary model of tag-mediated altruism is studied on large-scale complex networks addressing multiplayer one-shot Prisoner's Dilemma-like games with four competing strategies. Contrary to standard theoretical predictions, but in line with recent empirical findings, we observed that altruistic acts in non-repeated interactions can emerge as a natural consequence of recognition of heritable phenotypic traits such as visual tags, which enable the discrimination between potentially beneficial and unproductive encounters. Moreover, we identified topological regimes in which cooperation always prevails at short times, but where unconditional cooperators are favored over conditional tag-based helpers, even though the latter initially have a slight reproductive advantage. After very long times, we found that all four strategies appeared about equally often, meaning that only one quarter of agents refused cooperation egoistically. However, our study suggests that intra-tag generosity can quickly evolve to dominate over other strategies in spatially structured environments that are otherwise detrimental to cooperative behavior. (C) 2012 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Hadzibeganovic, Tarik UNSPECIFIED UNSPECIFIED UNSPECIFIED Lima, F. Welington S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Stauffer, Dietrich UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-480780
DOI:	10.1016/j.cpc.2012.05.020
Journal or Publication Title:	Comput. Phys. Commun.
Volume:	183
Number:	11
Page Range:	S. 2315 - 2322
Date:	2012
Publisher:	ELSEVIER
Place of Publication:	AMSTERDAM
ISSN:	1879-2944
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language PRISONERS-DILEMMA; COOPERATIVE BEHAVIOR; GROUP SELECTION; DYNAMICS; MODEL; RECIPROCITY; PUNISHMENT; EMERGENCE; PROMOTES; CUES Multiple languages Computer Science, Interdisciplinary Applications; Physics, Mathematical Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/48078