We present a method for performing Hamiltonian Monte Carlo that largely eliminates sample rejection for typical hyperparameters. In situations that would normally lead to rejection, instead a longer trajectory is computed until a new state is reached that can be accepted. This is achieved using Markov chain transitions that satisfy the fixed point equation, but do not satisfy detailed balance. The resulting algorithm significantly suppresses the random walk behavior and wasted function evaluations that are typically the consequence of update rejection. We demonstrate a greater than factor of two improvement in mixing time on three test problems. We release the source code as Python and MATLAB packages.
Hamiltonian Monte Carlo Without Detailed Balance
Jascha Narain Sohl-Dickstein,M. Mudigonda,M. DeWeese
Published 2014 in International Conference on Machine Learning
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- Publication year
2014
- Venue
International Conference on Machine Learning
- Publication date
2014-06-21
- Fields of study
Mathematics, Computer Science
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