Estimation of a convex discrete distribution

Details Estimation of a convex discrete distribution Estimation of a convex discrete distribution

2012-02-28

arxiv.org/abs/1202.6263v1

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Scientific paper

Non-parametric estimation of a convex discrete distribution may be of interest in several applications, such as the estimation of species abundance distribution in ecology. In this paper we study the least squares estimator of a discrete distribution under the constraint of convexity. We show that this estimator exists and is unique, and that it always outperforms the classical empirical estimator in terms of the $\ell_{2}$-distance. We provide an algorithm for its computation, based on the support reduction algorithm. We compare its performance to those of the empirical estimator, on the basis of a simulation study.

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