首页    期刊浏览 2024年12月01日 星期日
登录注册

文章基本信息

  • 标题:Merging simulation and projection approaches to solve high‐dimensional problems with an application to a new Keynesian model
  • 作者:Maliar, Lilia ; Maliar, Serguei
  • 期刊名称:Quantitative Economics
  • 电子版ISSN:1759-7331
  • 出版年度:2015
  • 卷号:6
  • 期号:1
  • 页码:1-47
  • DOI:10.3982/QE364
  • 语种:English
  • 出版社:John Wiley & Sons, Ltd.
  • 摘要:

    We introduce a numerical algorithm for solving dynamic economic models that merges stochastic simulation and projection approaches: we use simulation to approximate the ergodic measure of the solution, we cover the support of the constructed ergodic measure with a fixed grid, and we use projection techniques to accurately solve the model on that grid. The construction of the grid is the key novel piece of our analysis: we replace a large cloud of simulated points with a small set of “representative” points. We present three alternative techniques for constructing representative points: a clustering method, an ε -distinguishable set method, and a locally-adaptive variant of the ε -distinguishable set method. As an illustration, we solve one- and multi-agent neoclassical growth models and a large-scale new Keynesian model with a zero lower bound on nominal interest rates. The proposed solution algorithm is tractable in problems with high dimensionality (hundreds of state variables) on a desktop computer.

  • 关键词:Ergodic set ; ε‐distinguishable set ; clusters ; adaptive grid ; discrepancy ; large‐scale model ; new Keynesian model ; ZLB ; stochastic simulation ; C61 ; C63 ; C68 ; E31 ; E52
Loading...
联系我们|关于我们|网站声明
国家哲学社会科学文献中心版权所有