Estimation of the offspring mean in a branching process with non stationary immigration

I. Rahimov

Communications in Statistics - Theory and Methods, 2016, vol. 45, issue 19, 5619-5627

Abstract: In the paper, we consider a natural estimator of the offspring mean of a branching process with non stationary immigration based on observation of population sizes and number of immigrating individuals to each generation. We demonstrate that using a central limit theorem for multiple sums of dependent random variables it is possible to derive asymptotic distributions for the estimator without prior knowledge about the behavior (criticality) of the reproduction process. Before the three cases of criticality have been considered separately. Assuming that the immigration mean and variance vary regularly, conditions guaranteeing the strong consistency of the proposed estimator is also derived.

Date: 2016
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DOI: 10.1080/03610926.2014.948200

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