Large and moderate deviations for importance sampling in the Heston model
Large and moderate deviations for importance sampling in the Heston model
复制标题
Heston 模型中重要性采样的大偏差和中偏差
DOI:
10.1007/s10479-023-05424-0
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发表时间:
2023
影响因子:
4.8
通讯作者:
Geha M
中科院分区:
文献类型:
--
作者:
Geha M
We provide a detailed importance sampling analysis for variance reduction in stochastic volatility models. The optimal change of measure is obtained using a variety of results from large and moderate deviations: small-time, large-time, small-noise. Specialising the results to the Heston model, we derive many closed-form solutions, making the whole approach easy to implement. We support our theoretical results with a detailed numerical analysis of the variance reduction gains.
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