Information in generalized method of moments estimation and entropy-based moment selection
广义矩估计中的信息与基于熵的矩条件选择
In this paper, we make five contributions to the literature on information and entropy in generalized method of moments (GMM) estimation. First, we introduce the concept of the long run canonical correlations (LRCCs) between the true score vector and the moment function f (vt, θ0) and show that they provide a metric for the information contained in the population moment condition E [f (vt, θ0)] = 0. Second, we show that the entropy of the limiting distribution of the GMM…