Perfect Simulation
Since the mid-1990's, there has been much work on the development and application
of algorithms that will enable the
simulation of the invariant measure
of a Markov chain, either exactly (that is, by drawing a random sample
known to be from
this distribution) or
approximately, but with computable order of accuracy. These were sparked by
the introduction of the ``coupling-from-the-past'' (CFTP) technique of
Propp and Wilson, and several variations
and extensions of this idea have since appeared in the literature, and
have proven effective in areas such as statistical physics, operations
research, and the study of spatial
point processes, where they
provide simple and powerful
alternatives to existing CPU consuming, often unsettlingly inaccurate,
simulational methods. |  
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