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Exact Bayesian regression of piecewise constant functions

Hutter, Marcus


We derive an exact and ecient Bayesian regression algorithm for piecewise constant functions of unknown segment number, boundary locations, and levels. The derivation works for any noise and segment level prior, e.g. Cauchy which can handle outliers. We derive simple but good estimates for the in-segment variance. We also propose a Bayesian regression curve as a better way of smoothing data without blurring boundaries. The Bayesian approach also allows straightforward determination of the...[Show more]

CollectionsANU Research Publications
Date published: 2007
Type: Journal article
Source: Bayesian Analysis
DOI: 10.1214/07-BA225


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