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This study aims at figuring out the crucial topological ingredients which affect the outcomes of the ultimatum game located on different networks,encompassing the regular network,the random network,the small world network,and the scale-free network.With the aid of random interchanging algorithm,we investigate the relations between the outcomes of the ultimatum game and some topological ingredients,including the average range,the clustering coefficient and the heterogeneity,and so forth.It is found that for the regular,random and small-work networks,the average range and the clustering coefficient have evident impacts on the ultimatum game,while for the scale-free network the original degree heterogeneity and the underlying rich-club characterizations are the mainly important topologica ingredients that influence the outcomes of ultimatum game substantially. 相似文献
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This paper presents a new chaotic Hopfield network with a piecewise linear activation function.The dynamic of the network is studied by virtue of the bifurcation diagram,Lyapunov exponents spectrum and power spectrum.Numerical simulations show that the network displays chaotic behaviours for some well selected parameters. 相似文献
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为了求解随机整数规划问题,提出了随机整数规划期望值模型的概念,分析了利用DNA遗传算法求解此类问题的优点,并设计了求解算法,最后通过报童问题,验证了算法的可行性和有效性. 相似文献
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考虑消费者预期后悔因素,在分别提供新型、旧型产品的两个企业构成的市场中,建立了企业产品推介策略模型,分析了预期后悔对企业的产品推介和定价策略及利润的影响。消费者购买新产品后实际效用低于旧产品则产生转换后悔,购买旧产品后实际效用低于新产品则产生重复购买后悔。结果表明:消费者对转换后悔的厌恶程度越大,新企业的产品推介投资越多,两个企业的价格和利润越小,而重复购买后悔厌恶时的结论则相反。相比无后悔因素的情况,转换后悔和重复购买后悔的存在分别损害和增加两个企业的利润,后悔因素对新企业利润的影响比旧企业更大。此外,转换后悔的存在会促使新企业增加产品推介投资,而重复购买后悔的存在则导致相反结论。 相似文献
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由于风险投资的高不确定性和风险性,使得人们难以准确预测风险投资项目的收益和状态概率,而只能得到其大致的区间范围。鉴于这种情况,本文将投资项目收益和状态概率描述为模糊变量,利用模糊变量的均值和方差建立了模糊风险投资决策模型,并给出利用模糊模拟方法计算的实例。 相似文献
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