Reconstructing Input Models in Stochastic Simulation
Reconstructing Input Models in Stochastic Simulation
复制标题
在随机模拟中重建输入模型
DOI:
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发表时间:
2016
期刊:
影响因子:
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通讯作者:
Bo Zhang
中科院分区:
文献类型:
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作者:
A. Goeva;H. Lam;Huajie Qian;Bo Zhang
We investigate the problem of nonparametrically calibrating the input model in stochastic simulation, given only the availability of output data. While studies on simulation input uncertainty have focused on the use of input data, our inverse model calibration problem arises in various situations where resource and operational limitations hinder the direct observability of input data. We propose a moment-based, maximum entropy framework to infer the input model, by matching statistics between the simulation output and the real- world output. To bypass the methodological difficulties from the stochastic constraints in our formulation, we propose a stochastic quadratic penalty method that converts the problem into a sequence of least-square problems, where each element in the sequence can be solved by efficient stochastic approximation algorithms. We analyze the statistical properties of our method and demonstrate its ability to recover input models with numerical experiments.