The Annals of Statistics

Profile Likelihood and Conditionally Parametric Models

Thomas A. Severini and Wing Hung Wong

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In this paper, we outline a general approach to estimating the parametric component of a semiparametric model. For the case of a scalar parametric component, the method is based on the idea of first estimating a one-dimensional subproblem of the original problem that is least favorable in the sense of Stein. The likelihood function for the scalar parameter along this estimated subproblem may be viewed as a generalization of the profile likelihood for the problem. The scalar parameter is then estimated by maximizing this "generalized profile likelihood." This method of estimation is applied to a particular class of semiparametric models, where it is shown that the resulting estimator is asymptotically efficient.

Article information

Ann. Statist., Volume 20, Number 4 (1992), 1768-1802.

First available in Project Euclid: 12 April 2007

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Mathematical Reviews number (MathSciNet)

Zentralblatt MATH identifier


Primary: 62F35: Robustness and adaptive procedures
Secondary: 62G07: Density estimation 62F10: Point estimation

Efficiency estimation nonparametric semiparametric


Severini, Thomas A.; Wong, Wing Hung. Profile Likelihood and Conditionally Parametric Models. Ann. Statist. 20 (1992), no. 4, 1768--1802. doi:10.1214/aos/1176348889.

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