curvature and hamiltonian monte carlo
Positive Curvature and Hamiltonian Monte Carlo
Seiler, Christof, Rubinstein-Salzedo, Simon, Holmes, Susan
The Jacobi metric introduced in mathematical physics can be used to analyze Hamiltonian Monte Carlo (HMC). Our calculation of the sectional curvature of this HMC manifold allows us to see that it is positive in cases such as sampling from a high dimensional multivariate Gaussian. We show that positive curvature can be used to prove theoretical concentration results for HMC Markov chains. Papers published at the Neural Information Processing Systems Conference.