The inefficiency of re-weighted sampling and the curse of system size in high-order path integration

  title={The inefficiency of re-weighted sampling and the curse of system size in high-order path integration},
  author={M. Ceriotti and Guy A. R. Brain and Oliver Riordan and David E. Manolopoulos},
  journal={Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences},
  pages={17 - 2}
Computing averages over a target probability density by statistical re-weighting of a set of samples with a different distribution is a strategy which is commonly adopted in fields as diverse as atomistic simulation and finance. Here we present a very general analysis of the accuracy and efficiency of this approach, highlighting some of its weaknesses. We then give an example of how our results can be used, specifically to assess the feasibility of high-order path integral methods. We… 

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