HiBO: Hierarchical Bayesian Optimization via Adaptive Search Space Partitioning

• URL: http://arxiv.org/abs/2410.23148v3
• Date: Fri, 22 Nov 2024 16:18:55 GMT
• Title: HiBO: Hierarchical Bayesian Optimization via Adaptive Search Space Partitioning
• Authors: Wenxuan Li, Taiyi Wang, Eiko Yoneki,
• Abstract summary: HiBO is a novel hierarchical algorithm integrating global-level search space partitioning information into the acquisition strategy of a local BO-based. A set of evaluations demonstrates that HiBO outperforms state-of-the-art methods in high-dimensional synthetic benchmarks.
• Score: 0.7737746260673106
• License:
• Abstract: Optimizing black-box functions in high-dimensional search spaces has been known to be challenging for traditional Bayesian Optimization (BO). In this paper, we introduce HiBO, a novel hierarchical algorithm integrating global-level search space partitioning information into the acquisition strategy of a local BO-based optimizer. HiBO employs a search-tree-based global-level navigator to adaptively split the search space into partitions with different sampling potential. The local optimizer then utilizes this global-level information to guide its acquisition strategy towards most promising regions within the search space. A comprehensive set of evaluations demonstrates that HiBO outperforms state-of-the-art methods in high-dimensional synthetic benchmarks and presents significant practical effectiveness in the real-world task of tuning configurations of database management systems (DBMSs).

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