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81.
82.
This paper proposes a new model of Incomplete Minority Game (IMG), which features a default hierarchy of rules. This model introduces random bits into players’ individual strategies and is capable of applying the exception rules in the absence of the default one. Analysis of the numerical experiment results indicates that, in comparison with the standard Minority Game (SMG) model, this IMG model expands the maximum ensemble of uncorrelated strategies (MEUS) and excels in the effective strategy set and dynamic evolution of individual strategies, which enhance the overall performance by reaching an approximate ideal status in a shorter time with less memory steps and more stable combination of strategies. This paper also discusses the practical implication of the new IMG model. 相似文献
83.
葛洵 《纯粹数学与应用数学》2010,26(3)
证明了如果空间类κ为D-空间类或闭遗传不可约空间类,则I(κ)(∈)κ.这一结果对于κ为D空间类和闭遗传不可约空间类,肯定地回答了I(κ)是否包含I2(κ)问题. 相似文献
84.
85.
Abstract. We formulate a robust optimal stopping-time problem for a state-space system and give the connection between various notions
of lower value function for the associated games (and storage function for the associated dissipative system) with solutions
of the appropriate variational inequality (VI) (the analogue of the Hamilton—Jacobi—Bellman—Isaacs equation for this setting).
We show that the stopping-time rule can be obtained by solving the VI in the viscosity sense and a positive definite supersolution
of the VI can be used for stability analysis. 相似文献
86.
Arantza Estévez-Fernández Peter Borm Pedro Calleja Herbert Hamers 《Annals of Operations Research》2008,158(1):189-203
Two classes of one machine sequencing situations are considered in which each job corresponds to exactly one player but a
player may have more than one job to be processed, so called RP(repeated player) sequencing situations. In max-RP sequencing
situations it is assumed that each player’s cost function is linear with respect to the maximum completion time of his jobs,
whereas in min-RP sequencing situations the cost functions are linear with respect to the minimum completion times. For both
classes, following explicit procedures to go from the initial processing order to an optimal order for the coalition of all
players, equal gain splitting rules are defined. It is shown that these rules lead to core elements of the associated RP sequencing
games. Moreover, it is seen that min-RP sequencing games are convex.
We thank two referees for their valuable suggestions for improvement.
Financial support for P. Calleja has been given by the Ministerio de Educación y Ciencia and FEDER under grant SEJ2005-02443/ECON,
and by the Generalitat de Catalunya through a BE grant from AGAUR and grant 2005SGR00984. 相似文献
87.
I. Müller 《Journal of Thermal Analysis and Calorimetry》2000,60(3):1071-1079
Competing groups in a population will be integrated or segregated depending on their contest strategies.
In this work a population of a fixed proportion of hawks and doves is supposed to be able to employ two different contest
strategies, one more competitive than the other one. Energies are derived for populations employing these strategies and these
energies depend on the availability of the resource for which hawks and doves compete.
The energy for the less competitive strategy is lower than the other one when the resource is abundant. In that case hawks
and doves can be in cohabitation in all proportions. If, however, the resource is scarce, the energy of the more competitive
strategy is lower than the other one. In that case complete segregation of hawks and doves into colonies will result.
The situation is akin to the phase pressure diagram of a binary solution with eutectic point, miscibility gap in the liquid
phase and complete miscibility in the vapour phase.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
88.
We establish NP-completeness of two problems on core stable coalitions in hedonic games. In the first problem every player has only two acceptable coalitions in his preference list, and in the second problem the preference structures arise from the distances in an underlying metric space. 相似文献
89.
李文静 《数学的实践与认识》2010,40(7)
在经济全球化大背景下,中外零售企业长期共存、共同发展的局面将会是中国零售市场的现实状况.对中外零售商的互动博弈进行深入剖析,将有助于更好地把握中外零售商的竞争态势,制定促进本土零售商持续发展的合理战略.基于演化博弈论构建模型,并以大商集团和沃尔玛为例,尝试性地对中外零售商之间的互动关系进行了分析,从而得出结论:中外零售商之间存在着较为复杂的互动关系,双方是合作还是竞争取决于市场环境、合作成本、合作收益以及各自的发展战略等多方面因素. 相似文献
90.
Juan Aparicio Juan Carlos Ferrando Ana Meca Julia Sancho 《Annals of Operations Research》2008,158(1):229-241
In this paper we introduce an asymmetric model of continuous electricity auctions with limited production capacity and bounded
supply functions. The strategic bidding is studied with this model by means of an electricity market game. We prove that for
every electricity market game with continuous cost functions a mixed-strategy Nash equilibrium always exists. In particular,
we focus on the behavior of producers in the Spanish electricity market. We consider a very simple form for the Spanish electricity
market: an oligopoly consisting just of independent hydro-electric power production units in a single wet period. We show
that a pure-strategy Nash equilibrium for the Spanish electricity market game always exists. 相似文献