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Analyzing complex strategic interactions in multiagent systems
 In AAAI03 Workshop on Game Theoretic and Decision Theoretic Agents
, 2002
"... We develop a model for analyzing complex games with repeated interactions, for which a full gametheoretic analysis is intractable. Our approach treats exogenously specified, heuristic strategies, rather than the atomic actions, as primitive, and computes a heuristicpayoff table specifying the expe ..."
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Cited by 61 (3 self)
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We develop a model for analyzing complex games with repeated interactions, for which a full gametheoretic analysis is intractable. Our approach treats exogenously specified, heuristic strategies, rather than the atomic actions, as primitive, and computes a heuristicpayoff table specifying the expected payoffs of the joint heuristic strategy space. We analyze a particular game based on the continuous double auction, and compute Nash equilibria of previously published heuristic strategies. To determine the most plausible equilibria, we study the replicator dynamics of a large population playing the strategies. To account for errors in estimation of payoffs or improvements in strategies, we analyze the dynamics and equilibria based on perturbed payoffs.
Combinatorial auctions for supply chain formation
 in: Second ACM Conference on Electronic Commerce, 2000
"... Supply chain formation presents difficult coordination issues for distributed negotiation protocols. Agents must simultaneously negotiate production relationships at multiple levels, with important interdependencies among inputs and outputs at each level. Combinatorial auctions address this problem ..."
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Cited by 57 (2 self)
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Supply chain formation presents difficult coordination issues for distributed negotiation protocols. Agents must simultaneously negotiate production relationships at multiple levels, with important interdependencies among inputs and outputs at each level. Combinatorial auctions address this problem by global optimization over expressed offers to engage in compound exchanges. Optimizing with respect to offers results in optimal allocations if the offers reflect true values and costs. But autonomous selfinterested agents have an incentive to bid strategically in an attempt to gain
Evolutionary computation in structural design
 Journal of Engineering with Computers
, 2001
"... Evolutionary computation is emerging as a new engineering computational paradigm, which may significantly change the present structural design practice. For this reason, an extensive study of evolutionary computation in the context of structural design has been conducted in the Information Technolog ..."
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Cited by 37 (5 self)
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Evolutionary computation is emerging as a new engineering computational paradigm, which may significantly change the present structural design practice. For this reason, an extensive study of evolutionary computation in the context of structural design has been conducted in the Information Technology and Engineering School at George Mason University and its results are reported here. First, a general introduction to evolutionary computation is presented and recent developments in this field are briefly described. Next, the field of evolutionary design is introduced and its relevance to structural design is explained. Further, the issue of creativity/novelty is discussed and possible ways of achieving it during a structural design process are suggested. Current research progress in building engineering systems ’ representations, one of the key issues in evolutionary design, is subsequently discussed. Next, recent developments in constrainthandling methods in evolutionary optimization are reported. Further, the rapidly growing field of evolutionary multiobjective optimization is presented and briefly described. An emerging subfield of coevolutionary design is subsequently introduced and its current advancements reported. Next, a comprehensive review of the applications of evolutionary computation in structural design is provided and chronologically classified. Finally, a summary of the current research status and a discussion on the most promising paths of future research are also presented.
Agentbased Simulation for Research in Economics
"... Agentbased simulations have produced a variety of interesting contributions to economic research in the past years. Nevertheless, the methodology of economic simulations in general and agentbased simulations in particular is still in question. This is due to the fact that simulations are conducted ..."
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Agentbased simulations have produced a variety of interesting contributions to economic research in the past years. Nevertheless, the methodology of economic simulations in general and agentbased simulations in particular is still in question. This is due to the fact that simulations are conducted without considering the underlying theory and links to standard economic approaches. This paper discusses the use of simulations in economics and reviews the four most common agentbased approaches and their link to economic theory.
Stylised Facts and the Contribution of Simulation to the
"... application of computer simulation as a research method raises two important questions: (1) Does simulation really offer added value over established methods? (2) How can the danger of arbitrariness caused by the extended modelling possibilities be minimised? We present the concept of stylised facts ..."
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application of computer simulation as a research method raises two important questions: (1) Does simulation really offer added value over established methods? (2) How can the danger of arbitrariness caused by the extended modelling possibilities be minimised? We present the concept of stylised facts as a methodological basis for approaching these questions systematically. In particular, stylised facts provide a point of reference for a comparative analysis of models intended to explain an observable phenomenon. This is shown with reference to a recent discussion in the &quot;economic analysis of accounting &quot; literature where established methods, i.e. game theory, as well as computer simulations are used: the susceptibility of the &quot;Groves mechanism &quot; to collusion. Initially, we identify six stylised facts on the stability of collusion in empirical studies. These facts serve as a basis for the subsequent comparison of four theoretical models with reference to the above questions: (1) We find that the simulation models of Krapp and Deliano offer added value in comparison to the game theoretical models. They can be related to more stylised facts, achieve a better reproduction and exhibit far greater potential for incorporating yet unaddressed stylised facts. (2) Considered in the light of the stylised facts to which the models can be related, Deliano's simulation model exhibits
Certificate
, 2007
"... This is to certify that the project report titled “ Wardrop Equilibrium and Potential ..."
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This is to certify that the project report titled “ Wardrop Equilibrium and Potential