Solving Non-Linear Models by Parametrizing Expectations

本项目开发了经济动态模型的求解技术。 这种类型的求解过程可以模拟模型 在电脑上 动态模型是随着时间的推移而发展的模型， 因此，它们最适合于经济政策分析。 在计算机上模拟动态模型可以分析 该模型的属性，并测试它是否是一个很好的描述 真实的经济。 最终，计算机模拟可以确定 经济政策的特定变化的影响，他们可以提供 指导决策。 在这个项目中， 数值解的开发和应用到几个模型。 近年来，寻找动态经济问题的数值求解程序， 模型已经成为一个重要的问题。 这些挑战的主要 程序是计算的易处理性和准确性。 计算 易处理性意味着算法允许快速计算， 模拟有趣的模型是可行的，而不必 在电脑上花费太多的时间和金钱。 此外，由于所有 这些方法只能近似真实解，因此必须 确保解决方案的计算具有合理的 精度 对于一类重要的模型， 该项目可能会改善现有的方法， 在计算速度和准确性方面。

This project develops a solution technique for economic dynamic models. A solution procedure of this type makes it possible to simulate models on a computer. Dynamic models are ones that evolve through time and, thus, they are most appropriate for economic policy analysis. Simulating a dynamic model on the computer makes it possible to analyze the properties of the model, and to test if it is a good description of the real economy. Ultimately, computer simulations can determine the effect of a particular change in economic policy, and they can provide guidance in policy-making. In this project a technique for finding numerical solutions is developed and applied to several models. Recently, finding numerical solution procedures for dynamic economic models has become an important issue. The main challenges to these procedures are computational tractability and accuracy. Computational tractability means that the algorithms allow for fast computation, so that it is feasible to simulate interesting models without having to spend too much time and money on the computer. Also, since all of these methods only approximate the true solution, it is necessary to make sure that the solution is computed with a reasonable degree of accuracy. For a class of important models, the method developed in this project is likely to improve on the existing methods both in terms of computational speed and in terms of accuracy.