MCMC samplers ordinarily use a Gaussian proposal distribution. Generalise sampler types (such as Metropolis-Hastings, HMC, MALA etc) to allow custom (aka user-defined) proposal distributions, such as truncated or more generally un-normalized proposal factors. This issue is a superset of #120.
MCMC samplers ordinarily use a Gaussian proposal distribution. Generalise sampler types (such as Metropolis-Hastings, HMC, MALA etc) to allow custom (aka user-defined) proposal distributions, such as truncated or more generally un-normalized proposal factors. This issue is a superset of #120.