HiBO: Hierarchical Bayesian Optimization via Adaptive Search Space Partitioning
Keywords: High-dimensional Bayesian Optimization, Search Space Partitioning, DBMS Configuration Tuning
TL;DR: HiBO, as a hierarchical Bayesian optimization algorithm, integrates global-level space partitioning information into a local BO-based optimizer's acquisition strategy for better efficiency on high-dimensional optimization tasks.
Abstract: Optimizing opaque 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 the 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).
Primary Area: optimization
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Submission Number: 3902
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