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oktober 31, 2005
Nytt nummer av JASSS (Journal of Artificial Societies and Social Simulation)
JASSS (Journal of Artificial Societies and Social Simulation) har kommit ut med ett nytt nummer, Volume 8, Issue 4. För en kort presentation av tidskriften, se Journal of Artificial Societies and Social Simulation.
Detta nummer har några intressanta artiklar.
Josep M. Pujol, Andreas Flache, Jordi Delgado, Ramon Sangüesa
How Can Social Networks Ever Become Complex? Modelling the Emergence of Complex Networks from Local Social Exchanges
Abstract:
Small-world and power-law network structures have been prominently proposed as models of large networks. However, the assumptions of these models usually lack sociological grounding. We present a computational model grounded in social exchange theory. Agents search attractive exchange partners in a diverse population. Agent use simple decision heuristics, based on imperfect, local information. Computer simulations show that the topological structure of the emergent social network depends heavily upon two sets of conditions, harshness of the exchange game and learning capacities of the agents. Further analysis show that a combination of these conditions affects whether star-like, small-world or power-law structures emerge.
Vilket kanske kan ses som en pendang till Kritik kring power law-forskning.
Chung-Yuan Huang, Chuen-Tsai Sun and Hsun-Cheng Lin
Influence of Local Information on Social Simulations in Small-World Network Models
Abstract
As part of Watts and Strogatz's small-world model of complex networks, local information mechanisms such as landscape properties are used to approximate real-world conditions in social simulations. The authors investigated the influence of local information on social simulations based on the small-world network model, using a cellular automata variation with added shortcuts as a test platform for simulating the spread of an epidemic disease or cultural values/ideas. Results from experimental simulations show that the percentage of weak individuals should be considered significant local information, but vertex degree influences and the distribution patterns of weak individuals should not. When exploring contagion problems, the results encourage a future emphasis on setting and the proportions of specific values of local information related to infection strength or resistance, and a reduced emphasis on the detailed topological structure of small-world network models and the distribution patterns of specific values of local information.
Det finns även flera artiklar på temat Epistemological Perspectives on Simulation .
Posted by hakank at oktober 31, 2005 06:40 EM Posted to Agentbaserad modellering | Social Network Analysis/Complex Networks