Combination of general antithetic transformations and control variables

• 成果类型: Article
• 署名作者: Ben-Ameur, H; L'Ecuyer, P; Lemieux, C
• 署名单位: Universite de Montreal; HEC Montreal; Universite de Montreal; HEC Montreal; Universite de Montreal; Universite de Montreal; University of Calgary
• 刊物名称: MATHEMATICS OF OPERATIONS RESEARCH
• ISSN/ISSBN: 0364-765X
• DOI: 10.1287/moor.1040.0101
• 发表日期: 2004
• 页码: 946-960
• 关键词: variance reduction

摘要

Several methods for reducing the variance in the context of Monte Carlo simulation are based on correlation induction. This includes antithetic variates, Latin hypercube sampling, and randomized version of quasi-Monte Carlo methods such as lattice rules and digital nets. where the resulting estimators are usually weighted averages of several dependent random variables that can be seen as function evaluations at a finite set of random points in the unit hypercube. In this paper. we consider a setting where these methods can be combined with the use of control variates and we provide conditions under which we can formally prove that the variance is minimized by choosing equal weights and equal control variate coefficients across the different points of evaluation, regardless of the function (integrand) that is evaluated.