閉ループ多エージェント経路探索のための適応ホライズン競合ベース探索
Adaptive-Horizon Conflict-Based Search for Closed-Loop Multi-Agent Path Finding
計算予算に応じて計画ホライズンを動的に調整し、単一の制約木を再利用することで、迅速な実行可能解と漸近的最適性を両立する閉ループMAPFアルゴリズムACCBSを提案した。
詳しい要約
1. どんなもの?
2. 先行研究と比べてどこがすごい?
3. 技術・手法の肝は?
4. どうやって有効だと検証した?
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6. 次に読むべき論文は?
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著者: Jiarui Li, Federico Pecora, Runyu Zhang, Gioele Zardini
分類: cs.RO
原文アブストラクト
Multi-Agent Path Finding (MAPF) is a core coordination problem for large robot fleets in automated warehouses and logistics. Existing approaches are typically either open-loop planners, which must compute complete trajectories before execution and therefore may incur substantial planning latency before actions can be taken, or closed-loop heuristics without reliable performance guarantees, limiting their use in safety-critical deployments. This paper presents Anytime Closed-Loop Conflict-Based Search (ACCBS), a closed-loop algorithm built on a finite-horizon variant of Conflict-Based Search (CBS) with a horizon-changing mechanism inspired by iterative horizon-deepening in Model Predictive Control (MPC). ACCBS dynamically adjusts the planning horizon based on the available computational budget, and reuses a single constraint tree to enable seamless transitions between horizons. As a result, it produces high-quality feasible solutions quickly while being asymptotically optimal as the budget increases, exhibiting anytime behavior. Extensive case studies demonstrate that ACCBS achieves a favorable balance between computational efficiency, solution quality, and execution flexibility, while naturally accommodating online disturbances through its closed-loop formulation.
