= Bodhisattva Sen
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Bodhisattva Sen coauthored improved risk bounds for <isotonic regression> with <Sabyasachi Chatterjee> and <Adityanand Guntuboyina>. Their analysis shows that the <least-squares estimator> adapts to the number of constant pieces of a monotone signal. The work also provides local <minimax> lower bounds, helping distinguish an estimator's limitations from limitations inherent in the data.<Improved Risk Bounds in Isotonic Regression by Sabyasachi Chatterjee and others>[Abstract and Section 4.1]{ref}
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