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 Statistical Learning







Multi-fidelity Monte Carlo: a pseudo-marginal approach

Neural Information Processing Systems

A key challenge in applying MCMC to scientific domains is computation: the target density of interest is often a function of expensive computations, such as a high-fidelity physical simulation, an intractable integral, or a slowly-converging iterative algorithm.



EnsembleSampling_Final

Neural Information Processing Systems

Ensemble sampling serves as a practical approximation to Thompson sampling when maintaining an exact posterior distribution over model parameters is computationally intractable. In this paper, we establish a regret bound that ensures desirable behavior when ensemble sampling is applied to the linear bandit problem.