# Comparing nite and biased in nite path length shootingrandom walk estimators for

@inproceedings{Sbert1997ComparingNA, title={Comparing nite and biased in nite path length shootingrandom walk estimators for}, author={radiosityMateu Sbert and Alex BrusiyAbstract}, year={1997} }

In this paper we compare the best shooting random walk estimator with expected nite path length and the estimator resulting of biasing the innnite one. Heuristic formulae for the Mean Square Error of both estimators are given, and based on them a formula for the relative eeciency of both estimators is presented. The results are contrasted with diierent tests. The formulae for the MSE are also useful to know a priori the number of paths (or particles) needed to obtain a given error.

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