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arXiv · 2511.10272

Bidirectional Bounded-Suboptimal Heuristic Search with Consistent Heuristics

Shahaf S. Shperberg·Natalie Morad·Lior Siag·Ariel Felner·Dor Atzmon
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Abstract

Recent advancements in bidirectional heuristic search have yielded significant theoretical insights and novel algorithms. While most previous work has concentrated on optimal search methods, this paper focuses on bounded-suboptimal bidirectional search, where a bound on the suboptimality of the solution cost is specified. We build upon the state-of-the-art optimal bidirectional search algorithm, BAE*, designed for consistent heuristics, and introduce several variants of BAE* specifically tailored for the bounded-suboptimal context. Through experimental evaluation, we compare the performance of these new variants against other bounded-suboptimal bidirectional algorithms as well as the standard weighted A* algorithm. Our results demonstrate that each algorithm excels under distinct conditions, highlighting the strengths and weaknesses of each approach.

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Shahaf S. Shperberg, Natalie Morad, Lior Siag, Ariel Felner, Dor Atzmon. 2025-11-13. Bidirectional Bounded-Suboptimal Heuristic Search with Consistent Heuristics. https://arxiv.org/abs/2511.10272

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