Transcription of Monte Carlo Methods and Importance Sampling
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Lecture Notes for Stat 578Cc Eric C. AndersonStatistical Genetics20 October 1999(subbin' Thompson) Monte Carlo Methods and Importance SamplingHistory and de nition:The term \ Monte Carlo " was apparently rst used by Ulam and vonNeumann as a Los Alamos code word for the stochastic simulations they applied to building betteratomic bombs. Their Methods , involving the laws of chance, were aptly named after the inter-national gaming destination; the moniker stuck and soon after the War a wide range of stickyproblems yielded to the new techniques.
t) takes the value 1 when X t = 0 and 0 otherwise. Denoting the ith simulated value of X tby x (i) our Monte Carlo estimate would be Pe(X t=0jX 0 = x 0) … 1 n Xn i=1 If0g(x (i)): Example II: Monte Carlo approximations to distributions. A simple extension of the above example is to approximate the whole probability distribution P(X tjX 0 = x 0 ...
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