Multi-fidelity Gaussian Process Bandit Optimisation
Multi-fidelity Gaussian Process Bandit Optimisation
复制标题
多保真高斯过程强盗优化
DOI:
--
复制
发表时间:
2016
影响因子:
5
通讯作者:
B. Póczos
中科院分区:
文献类型:
--
作者:
Kirthevasan Kandasamy;Gautam Dasarathy;Junier B. Oliva;J. Schneider;B. Póczos
In many scientific and engineering applications, we are tasked with the maximisation of an expensive to evaluate black box function f. Traditional settings for this problem assume just the availability of this single function. However, in many cases, cheap approximations to f may be obtainable. For example, the expensive real world behaviour of a robot can be approximated by a cheap computer simulation. We can use these approximations to eliminate low function value regions cheaply and use the expensive evaluations of f in a small but promising region and speedily identify the optimum. We formalise this task as a multi-fidelity bandit problem where the target function and its approximations are sampled from a Gaussian process. We develop MF-GP-UCB, a novel method based on upper confidence bound techniques. In our theoretical analysis we demonstrate that it exhibits precisely the above behaviour and achieves better bounds on the regret than strategies which ignore multi-fidelity information. Empirically, MF-GP-UCB outperforms such naive strategies and other multi-fidelity methods on several synthetic and real experiments.
DOI:
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发表时间:
2018-11
期刊:
ArXiv
影响因子:
--
作者:
Jialin Song;Yuxin Chen;Yisong Yue
通讯作者:
Jialin Song;Yuxin Chen;Yisong Yue
DOI:
10.48550/arxiv.1505.01627
发表时间:
2015
期刊:
arXiv e-prints
影响因子:
--
作者:
Gonz
通讯作者:
Gonz