Compressible generalized hybrid Monte Carlo.
Compressible generalized hybrid Monte Carlo.
复制标题
可压缩广义混合蒙特卡罗。
DOI:
10.1063/1.4874000
复制
发表时间:
2014
期刊:
影响因子:
--
通讯作者:
R. Skeel
中科院分区:
文献类型:
--
作者:
Youhan Fang;J. Sanz;R. Skeel
One of the most demanding calculations is to generate random samples from a specified probability distribution (usually with an unknown normalizing prefactor) in a high-dimensional configuration space. One often has to resort to using a Markov chain Monte Carlo method, which converges only in the limit to the prescribed distribution. Such methods typically inch through configuration space step by step, with acceptance of a step based on a Metropolis(-Hastings) criterion. An acceptance rate of 100% is possible in principle by embedding configuration space in a higher dimensional phase space and using ordinary differential equations. In practice, numerical integrators must be used, lowering the acceptance rate. This is the essence of hybrid Monte Carlo methods. Presented is a general framework for constructing such methods under relaxed conditions: the only geometric property needed is (weakened) reversibility; volume preservation is not needed. The possibilities are illustrated by deriving a couple of explicit hybrid Monte Carlo methods, one based on barrier-lowering variable-metric dynamics and another based on isokinetic dynamics.
影响因子:
1.4
作者:
Beskos, A.;Pinski, F. J.;Stuart, A. M.
通讯作者:
Stuart, A. M.
影响因子:
1.5
作者:
Beskos, Alexandros;Pillai, Natesh;Stuart, Andrew
通讯作者:
Stuart, Andrew
DOI:
10.1063/1.3253687
发表时间:
2009
期刊:
The Journal of chemical physics
影响因子:
--
作者:
Sweet,ChristopherR;Hampton,ScottS;Skeel,RobertD;Izaguirre,JesusA
通讯作者:
Izaguirre,JesusA