动态离散选择模型的贝叶斯估计

Bayesian Estimation of Dynamic Discrete Choice Models

Econometrica · 2009
被引 180
人大 A+FT50ABS 4*

中文导读

提出一种新方法,将动态规划求解与贝叶斯MCMC算法结合,同时求解和估计动态离散选择模型,大幅降低计算负担,并缓解“维度灾难”。

Abstract

We propose a new methodology for structural estimation of dynamic discrete choice models. We combine the Dynamic Programming (DP) solution algorithm with the Bayesian Markov Chain Monte Carlo algorithm into a single algorithm that solves the DP problem and estimates the parameters simultaneously. As a result, the computational burden of estimating a dynamic model becomes comparable to that of a static model. Another feature of our algorithm is that even though per solution-estimation iteration, the number of grid points on the state variable is small, the number of effective grid points increases with the number of estimation iterations. This is how we help ease the "Curse of Dimensionality". We simulate and estimate several versions of a simple model of entry and exit to illustrate our methodology. We also prove that under standard conditions, the parameters converge in probability to the true posterior distribution, regardless of the starting values.

贝叶斯估计动态离散选择模型马尔可夫链蒙特卡洛维数灾难