SPARC: 空間認識型経路計画 - 注意深いエージェント通信による実現
SPARC: Spatial-Aware Path Planning via Attentive Agent Communication
マルチロボット経路計画において、ロボット間の距離情報を注意機構に組み込むことで、混雑環境での通信効率を高め、最大128台へのスケーラブルな経路計画を実現した論文。
詳しい要約
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著者: Sayang Mu, Xiangyu Wu, Bo An
分類: cs.RO, cs.AI
原文アブストラクト
Efficient communication is critical for decentralized Multi-Robot Path Planning (MRPP), yet existing learned communication methods treat all neighboring robots equally regardless of their spatial proximity, leading to diluted attention in congested regions where coordination matters most. We propose Relation enhanced Multi Head Attention (RMHA), a communication mechanism that explicitly embeds pairwise Manhattan distances into the attention weight computation, enabling each robot to dynamically prioritize messages from spatially relevant neighbors. Combined with a distance-constrained attention mask and GRU gated message fusion, RMHA integrates seamlessly with MAPPO for stable end-to-end training. In zero-shot generalization from 8 training robots to 128 test robots on 40x40 grids, RMHA achieves approximately 75 percent success rate at 30 percent obstacle density outperforming the best baseline by over 25 percentage points. Ablation studies confirm that distance-relation encoding is the key contributor to success rate improvement in high-density environments. Index Terms-Multi-robot path planning, graph attention mechanism, multi-head attention, communication optimization, cooperative decision-making
