Generalizing the Taylor Principle: Comment
评论了Davig和Leeper（2007）提出的广义泰勒原理，指出该条件虽能排除部分不确定均衡，但未能确保基本均衡的唯一性，并讨论了被遗漏的均衡类型。
Troy Davig and Eric Leeper (2007) have proposed a condition they call the generalized Taylor principle to rule out indeterminate equilibria in a version of the new-Keynesian model where the parameters of the policy rule follow a Markov-switching process. We show that although their condition rules out a subset of indeterminate equilibria, it does not establish uniqueness of the fundamental equilibrium. We discuss the differences between indeterminate fundamental equilibria included by Davig and Leeper's condition and fundamental equilibria that their condition misses