2018

Sensitivity of Regular Estimators

Mukhin, Yaroslav

Understand

This paper studies local asymptotic relationship between two scalar estimates.

  • We define sensitivity of a target estimate to a control estimate to be the directional derivative of the target functional with respect to the gradient direction of the control functional.
  • Sensitivity according to the information metric on the model manifold is the asymptotic covariance of regular efficient estimators.
  • Sensitivity according to a general policy metric on the model manifold can be obtained from influence functions of regular efficient estimators.

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