Geodesic
On a problem of estimation of an infinite-dimensional parameter
Zapiski Nauchnykh Seminarov POMI, Probability and statistics. Part 22, Tome 441 (2015), pp. 187-203 
V. A. Ershov; I. A. Ibragimov. On a problem of estimation of an infinite-dimensional parameter. Zapiski Nauchnykh Seminarov POMI, Probability and statistics. Part 22, Tome 441 (2015), pp. 187-203. http://geodesic.mathdoc.fr/item/ZNSL_2015_441_a11/
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Voir la notice du chapitre de livre provenant de la source Math-Net.Ru

Let $X$ be a random variable taking the positive integer values and let $\mathbf P\{X=k\}=\theta(k)$. We consider the problem of estimation of the parameter $\theta=(\theta(1),\theta(2),\dots)$ on the base of the sample $X_1,X_2,\dots,X_n$ where the observations $X_j$ are independent copies of $X$.

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