Adaptive importance sampling and control variates
Adaptive importance sampling and control variates
复制标题
自适应重要性采样和控制变量
DOI:
10.1016/j.jmaa.2019.123608
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发表时间:
2020
影响因子:
1.3
通讯作者:
Kawai Reiichiro
中科院分区:
文献类型:
--
作者:
Federico Barbacovi;Kohei Kikuta;福田一貴;Kawai Reiichiro
We construct and investigate an adaptive variance reduction framework in which both importance sampling and control variates are employed. The three lines (Monte Carlo averaging and two variance reduction parameter search lines) run in parallel on a common sequence of uniform random vectors on the unit hypercube. Given that these two variance reduction techniques are effective often in a complementary way, their combined application is well expected to widen the applicability of adaptive variance reduction. We derive convergence rates of the theoretical estimator variance towards its minimum as a fixed computing budget increases, when stochastic approximation runs with optimal constant learning rates. We derive sufficient conditions for the proposed algorithm to attain the minimal estimator variance in the limit, by stochastic approximation with decreasing learning rates or by sample average approximation, when computing budget is unlimitedly available. Numerical results support our theoretical findings and illustrate the effectiveness of the proposed framework.
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DOI:
10.1287/moor.1070.0251
发表时间:
2007
期刊:
Math. Oper. Res.
影响因子:
--
作者:
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通讯作者:
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DOI:
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发表时间:
2010-04
期刊:
ACM Trans. Model. Comput. Simul.
影响因子:
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DOI:
10.1137/15m1047192
发表时间:
2017
期刊:
SIAM J. Sci. Comput.
影响因子:
--
作者:
Ray Kawai
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Ray Kawai
DOI:
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2008
期刊:
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影响因子:
--
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DOI:
--
发表时间:
2021
期刊:
影响因子:
--
作者:
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Reiichiro Kawai