arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.03117cs.LGstat.ML
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基于深度神经网络的多保真度贝叶斯优化

Multi-Fidelity Bayesian Optimization via Deep Neural Networks

University of Utah(犹他大学);Scientific Computing and Imaging Institute(科学计算与成像研究所)

Shibo Li, Wei Xing, Mike Kirby, Shandian Zhe

摘要:

贝叶斯优化(BO)是一个流行的框架来优化黑盒函数。在许多应用中,目标函数可以在多个精度下进行评估,以实现成本和精度之间的权衡。为了降低优化成本,已经提出了许多多保真度BO方法。尽管这些方法取得了成功,但它们忽略或过度简化了跨多个属性的强的复杂相关性,因此在估计目标函数时可能效率低下。为了解决这个问题,我们提出了深度神经网络多保真度贝叶斯优化(DNN-MFBO),可以灵活地捕捉各种复杂的关系之间的准确性,以提高目标函数的估计,从而优化性能。我们使用顺序的,逐行高斯-厄米特求积和矩匹配来实现基于互信息的捕获功能,这是计算上易处理的和高效的。我们展示了我们的方法在合成基准数据集和工程设计中的实际应用中的优势。

英文摘要:

Bayesian optimization (BO) is a popular framework to optimize black-box functions. In many applications, the objective function can be evaluated at multiple fidelities to enable a trade-off between the cost and accuracy. To reduce the optimization cost, many multi-fidelity BO methods have been proposed. Despite their success, these methods either ignore or over-simplify the strong, complex correlations across the fidelities, and hence can be inefficient in estimating the objective function. To address this issue, we propose Deep Neural Network Multi-Fidelity Bayesian Optimization (DNN-MFBO) that can flexibly capture all kinds of complicated relationships between the fidelities to improve the objective function estimation and hence the optimization performance. We use sequential, fidelity-wise Gauss-Hermite quadrature and moment-matching to fulfill a mutual information-based acquisition function, which is computationally tractable and efficient. We show the advantages of our method in both synthetic benchmark datasets and real-world applications in engineering design.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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