An efficient computational approach for prior sensitivity analysis and cross-validation

作者：Bornn Luke^*; Doucet Arnaud; Gottardo Raphael

来源：Canadian Journal of Statistics, 2010, 38(1): 47-64.

• Cross-validation
• g-prior
• Markov chain Monte Carlo
• penalized regression
• prior sensitivity
• regularization path plot
• sequential Monte Carlo
• variable selection

Prior sensitivity analysis and cross-validation are important tools in Bayesian statistics. However, due to the computational expense of implementing existing methods, these techniques are rarely used. In this paper, the authors show how it is possible to use sequential Monte Carlo methods to create an efficient and automated algorithm to perform these tasks. They apply the algorithm to the computation of regularization path plots and to assess the sensitivity of the tuning parameter in g-prior model selection. They then demonstrate the algorithm in a cross-validation context and use it to select the shrinkage parameter in Bayesian regression.

• 出版日期2010-3