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What is Learnable in Valiant's Theory of the Learnable? 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The M-estimator in a multi-phase random nonlinear model
Gabriela Ciuperca · 2007-06-01 · via math.ST updates on arXiv.org

This paper considers M-estimation of a nonlinear regression model with multiple change-points occuring at unknown times. The multi-phase random design regression model, discontinuous in each change-point, have an arbitrary error $ε$. In the case when the number of jumps is known, the M-estimator of locations of breaks and of regression parameters are studied. These estimators are consistent and the distribution of the regression parameter estimators is Gaussian. The estimator of each change-point converges, with the rate $n^{-1}$, to the smallest minimizer of the independent compound Poisson processes. The results are valid for a large class of error distributions.

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