PTMCMC

Shown here is the exploration of the posterior surface by coldest (cyan) chain and hottest (magenta) chain. The bimodal distribution is thoroughly explored due to exchange of information between the cold and hot chains. A regular Metropolis-Hastings MCMC routine will result in chains that get stuck in the valleys and hills of the posterior surface. The PTMCMC routine is based on Vousden et.al. (2016) and is implemented in Gravitational-Wave-Analysis-Tools (GWAT). Click here for the GIF to download/open in new tab. Give it time to load.