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- W2140051159 abstract "Particle Markov chain Monte Carlo (PMCMC) is a systematic way of combining the two main tools used for Monte Carlo statistical inference: sequential Monte Carlo (SMC) and Markov chain Monte Carlo (MCMC). We present a new PMCMC algorithm that we refer to as particle Gibbs with ancestor sampling (PGAS). PGAS provides the data analyst with an off-the-shelf class of Markov kernels that can be used to simulate, for instance, the typically high-dimensional and highly autocorrelated state trajectory in a state-space model. The ancestor sampling procedure enables fast mixing of the PGAS kernel even when using seemingly few particles in the underlying SMC sampler. This is important as it can significantly reduce the computational burden that is typically associated with using SMC. PGAS is conceptually similar to the existing PG with backward simulation (PGBS) procedure. Instead of using separate forward and backward sweeps as in PGBS, however, we achieve the same effect in a single forward sweep. This makes PGAS well suited for addressing inference problems not only in state-space models, but also in models with more complex dependencies, such as non-Markovian, Bayesian nonparametric, and general probabilistic graphical models." @default.
- W2140051159 created "2016-06-24" @default.
- W2140051159 creator A5045048407 @default.
- W2140051159 creator A5049812527 @default.
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- W2140051159 date "2014-01-01" @default.
- W2140051159 modified "2023-10-16" @default.
- W2140051159 title "Particle gibbs with ancestor sampling" @default.
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- W2140051159 doi "https://doi.org/10.5555/2627435.2670320" @default.
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