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- W2321431898 abstract "Park and Casella (2008) provided the Bayesian lasso for linear models by assigning scale mixture of normal (SMN) priors on the parameters and independent exponential priors on their variances. In this paper, we propose an alternative Bayesian analysis of the lasso problem. A different hierarchical formulation of Bayesian lasso is introduced by utilizing the scale mixture of uniform (SMU) representation of the Laplace density. We consider a fully Bayesian treatment that leads to a new Gibbs sampler with tractable full conditional posterior distributions. Empirical results and real data analyses show that the new algorithm has good mixing property and performs comparably to the existing Bayesian method in terms of both prediction accuracy and variable selection. An ECM algorithm is provided to compute the MAP estimates of the parameters. Easy extension to general models is also briefly discussed." @default.
- W2321431898 created "2016-06-24" @default.
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- W2321431898 date "2014-01-01" @default.
- W2321431898 modified "2023-09-30" @default.
- W2321431898 title "A new Bayesian lasso" @default.
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- W2321431898 doi "https://doi.org/10.4310/sii.2014.v7.n4.a12" @default.
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