In this paper we discuss a tag-based model that facilitates knowledge sharing in the context of agents playing the knowledge sharing game. Sharing the knowledge incurs a cost for the sharing agent, and thus non-sharing is the preferred option for selfish agents. Through agent-based simulations we show that knowledge sharing is possible even in the presence of non-sharing agents in the population. We also show that the performance of an agent society can be better when some agents bear the cost of sharing instead of the whole group sharing the cost.Unpublished[1] Holland, J.H.: The Effect of Labels (Tags) on Social interactions. Vol. SFI Working Paper 93-10-064, Santa Fe Institute, Santa Fe, NM (1993)
[2] YouTube, www.youtube.com
[3] CiteSeer, http://citeseer.ist.psu.edu
[4] Riolo, R.L., M.D. Cohen, and R. Axelrod.: Cooperation without Reciprocity. Nature 414, 2001: pp. 441--443 (2001).
[5] Hales, D.: Evolving Specialisation, Altruism and Group-Level Optimisation Using Tags. Multi-Agent-Based Simulation II: Third International Workshop, MABS 2002, Bologna, Italy, July 15-16, 2002, Vol. 2581, Lecture notes in computer science, pp. 26--35, Springer Berlin / Heidelberg (2003)
[6] Hales, D.: Tag Based Co-operation in Artificial Societies. Ph.D. Thesis, Department of Computer Science, University of Essex, UK, 2001.
[7] Folksonomy , http://en.wikipedia.org/wiki/Folksonomy
[8] Riolo, R.L.: The Effects of Tag-Mediated Selection of Partners in Evolving Populations Playing the Iterated Prisoner's Dilemma. 1997, Santa Fe Institute.
[9] Nowak, M.A. and K. Sigmund.: Evolution of indirect reciprocity by image scoring, Nature vol. 393, pp. 573--577 (1998)
[10] Trivers, R: The Evolution of Reciprocal Altruism, Quarterly Review of Biology 46 pp.35-57 (1971)
[11] Hamilton, W. D.: The genetical evolution of social behaviour. I, Journal of Theoretical Biology, 1964 Jul; 7(1):1-16.
[12] Savarimuthu, S., Purvis, M. A., Purvis, M. K., “Altruistic Sharing using Tags”, Proceedings of the 6th International Workshop on Agents and Peer-to-Peer Computing, Estoril, Portugal, May 2008 (in press).
[13] Németh, A. and K. Takács.: The Evolution of Proximity Based Altruism, Department of Sociology and Social Policy, 2006, Corvinus University of Budapest, Budapest.
[14] Clutten-Brock, T. H., and Parker, G. A.: Punishment in animal societies. Nature 373 (1995), 209 – 216.
[15] Savarimuthu, S., Purvis, M. A., Purvis, M. K., “Emergence of Sharing Behavior in a Multi-agent Society using Tags”, Proceedings of IEEE/WIC/ACM International Conference on Intelligent Agent Technology (IAT 2008), Sydney, Australia, December 2008 (in press)
