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• W2099679938 abstract "Bayesian optimization with Gaussian processes has become an increasingly popular tool in the machine learning community. It is efficient and can be used when very little is known about the objective function, making it popular in expensive black-box optimization scenarios. It uses Bayesian methods to sample the objective efficiently using an acquisition function which incorporates the model's estimate of the objective and the uncertainty at any given point. However, there are several different parameterized acquisition functions in the literature, and it is often unclear which one to use. Instead of using a single acquisition function, we adopt a portfolio of acquisition functions governed by an online multi-armed bandit strategy. We propose several portfolio strategies, the best of which we call GP-Hedge, and show that this method outperforms the best individual acquisition function. We also provide a theoretical bound on the algorithm's performance." @default.
• W2099679938 created "2016-06-24" @default.
• W2099679938 creator A5069219684 @default.
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• W2099679938 date "2010-09-28" @default.
• W2099679938 modified "2023-09-27" @default.
• W2099679938 title "Portfolio Allocation for Bayesian Optimization" @default.
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