Newey, W. K. and K. D. West (1987): \A Simple, Positive Semi-Denite, Heteroskedasticity and Autocorrelation Consistent Covariance Matrix", Econometrica 55, 703-708.
就是如何估计newey-west(1987)一文的式(5)?
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NeweyWest returns the same type of object as vcovHAC which is typically just the covariance matrix. NeweyWest返回相同类型的对象作为vcovHAC这是典型的协方差矩阵。