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• W2991705954 abstract "We address the new problem of estimating a piece-wise constant signal with the purpose of detecting its change points and the levels of clusters. Our approach is to model it as a nonparametric penalized least square model selection on a family of models indexed over the collection of partitions of the design points and propose a computationally efficient algorithm to approximately solve it. Statistically, minimizing such a penalized criterion yields an approximation to the maximum a posteriori probability (MAP) estimator. The criterion is then analyzed and an oracle inequality is derived using a Gaussian concentration inequality. The oracle inequality is used to derive on one hand conditions for consistency and on the other hand an adaptive upper bound on the expected square risk of the estimator, which statistically motivates our approximation. Finally, we apply our algorithm to simulated data to experimentally validate the statistical guarantees and illustrate its behavior." @default.
• W2991705954 created "2019-12-13" @default.
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• W2991705954 date "2019-12-03" @default.
• W2991705954 modified "2023-10-01" @default.
• W2991705954 title "Bayesian Model Selection for Change Point Detection and Clustering" @default.
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• W2991705954 hasPublicationYear "2019" @default.
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