arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1806.02255math.OCcs.GT
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用扩展数学规划求解平衡问题

Solving equilibrium problems using extended mathematical programming

Youngdae Kim, Michael C. Ferris

摘要:

我们介绍了一个扩展的数学规划框架,用于指定平衡问题及其变分表示,如广义纳什均衡,多重最优化问题的平衡约束,和(准)变分不等式,并计算他们的解决方案,从建模语言。我们定义了一组新的结构,用户注释变量和方程的模型来描述平衡和变分问题。我们的构造使模型能够从一个公式自然地转换为另一个更易于计算的形式,而不需要建模者提供衍生工具。在许多独立的代理人在平衡的背景下,我们方便表达复杂的结构,如共享的约束和额外的约束,他们的解决方案。我们定义了一个新的概念,共享变量,并展示了它的使用稀疏重新表述,均衡约束的均衡问题,代理商的混合定价行为,等等。我们从文献中给出了一些均衡和变分的例子,并描述了如何制定他们使用我们的框架。实验结果比较性能的各种互补配方的共享变量。我们的框架已经实施,并可在GAMS/EMP中使用。

英文摘要:

We introduce an extended mathematical programming framework for specifying equilibrium problems and their variational representations, such as generalized Nash equilibrium, multiple optimization problems with equilibrium constraints, and (quasi-) variational inequalities, and computing solutions of them from modeling languages. We define a new set of constructs with which users annotate variables and equations of the model to describe equilibrium and variational problems. Our constructs enable a natural translation of the model from one formulation to another more computationally tractable form without requiring the modeler to supply derivatives. In the context of many independent agents in the equilibrium, we facilitate expression of sophisticated structures such as shared constraints and additional constraints on their solutions. We define a new concept, shared variables, and demonstrate its uses for sparse reformulation, equilibrium problems with equilibrium constraints, mixed pricing behavior of agents, and so on. We give some equilibrium and variational examples from the literature and describe how to formulate them using our framework. Experimental results comparing performance of various complementarity formulations for shared variables are given. Our framework has been implemented and is available within GAMS/EMP.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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