The Estimation of Distributed Lags: A Comment
分布滞后的估计：评论
Considering first the case of a known autocorrelation coefficient $, Klein observes that (4) may be viewed as a structural linear relation between the latent variables yt' -et, xI and yt'-l -et-,. Even knowing $, two of those variables are not observable. But the y' and yt' may be computed; et and et-, may be considered as errors of observation of the corresponding latent variables. In comparison with the classical models containing errors in variables, (4) is somewhat…