A Note on Adaptive Estimation
نویسنده
چکیده
Adaptive Estimation An adaptive estimator is an efficient estimator for a model that is only partially specified. For example, consider estimating a parameter that describes a sample of observations drawn from a distribution F . One natural question is: Is it possible that an estimator of the parameter constructed without knowledge of F could be as efficient (asymptotically) as any well-behaved estimator that relies on knowledge of F? For some problems the answer is yes, and the estimator that is efficient is termed an adaptive estimator. Consider the familiar scalar linear regression model
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تاریخ انتشار 2006