Consistency of the posterior distribution and MLE for piecewise linear regression

Details Consistency of the posterior distribution and MLE for piecewise linear regression Consistency of the posterior distribution and MLE for piecewise linear regression

2012-03-21

arxiv.org/abs/1203.4753v1

Mathematics

Statistics Theory

Scientific paper

We prove the weak consistency of the posterior distribution and that of the Bayes estimator for a two-phase piecewise linear regression mdoel where the break-point is unknown. The non-differentiability of the likelihood of the model with regard to the break- point parameter induces technical difficulties that we overcome by creating a regularised version of the problem at hand. We first recover the strong consistency of the quantities of interest for the regularised version, using results about the MLE, and we then prove that the regularised version and the original version of the problem share the same asymptotic properties.

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