Papers › Calibrating general posterior credible regions

Calibrating general posterior credible regions

3 Sep 2015arXiv:1509.00922links table onlyarchive 2025-07-28

Nicholas Syring, Ryan Martin

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An advantage of methods that base inference on a posterior distribution is that credible regions are readily obtained. Except in well-specified situations, however, there is no guarantee that such regions will achieve the nominal frequentist coverage probability, even approximately. To overcome this difficulty, we propose a general strategy that introduces an additional scalar tuning parameter to control the posterior spread, and we develop an algorithm that chooses this parameter so that the corresponding credible region achieves the nominal coverage probability.

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