Efficiently Answering Durability Prediction Queries
Efficiently Answering Durability Prediction Queries
复制标题
高效回答耐久性预测查询
DOI:
10.1145/3448016.3457305
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Yang, Jun
中科院分区:
文献类型:
--
作者:
Gao, Junyang;Xu, Yifan;Agarwal, Pankaj K.;Yang, Jun
We consider a class of queries called durability prediction queries that arise commonly in predictive analytics, where we use a given predictive model to answer questions about possible futures to inform our decisions. Examples of durability prediction queries include "what is the probability that this financial product will keep losing money over the next 12 quarters before turning in any profit?" and "what is the chance for our proposed server cluster to fail the required service-level agreement before its term ends?" We devise a general method called Multi-Level Splitting Sampling (MLSS) that can efficiently handle complex queries and complex models---including those involving black-box functions---as long as the models allow us to simulate possible futures step by step. Our method addresses the inefficiency of standard Monte Carlo (MC) methods by applying the idea of importance splitting to let one "promising" sample path prefix generate multiple "offspring" paths, thereby directing simulation efforts toward more promising paths. We propose practical techniques for designing splitting strategies, freeing users from manual tuning. Experiments show that our approach is able to achieve unbiased estimates and the same error guarantees as standard MC while offering an order-of-magnitude cost reduction.
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DOI:
10.1007/978-3-642-00887-0_5
发表时间:
2009
期刊:
--
影响因子:
--
作者:
M. Lee;W. Hsu;Ling Li;W. Tok
通讯作者:
W. Tok
影响因子:
2.5
作者:
Gao, Junyang;Li, Xian;Yang, Jun
通讯作者:
Yang, Jun
DOI:
10.1145/2020408.2020601
发表时间:
2011-08
期刊:
--
影响因子:
--
作者:
Xiao Jiang;Chengkai Li;Ping Luo;Min Wang;Yong Yu
通讯作者:
Xiao Jiang;Chengkai Li;Ping Luo;Min Wang;Yong Yu
DOI:
--
发表时间:
1994
期刊:
Proceedings of Winter Simulation Conference
影响因子:
--
作者:
M. Villén;J. Villén
通讯作者:
J. Villén
影响因子:
2.5
作者:
Neil G. Marchant;Benjamin I. P. Rubinstein
通讯作者:
Benjamin I. P. Rubinstein