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Multi-Agent Path Finding for Large Agents

AAAI 2019 · Multi-agent systems and games › Human-AI and goal-conditioned · approach: Conflict-based search for MAPF · 114 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
add multiple mutually disjunctive constraints per CT expansion (SYM vs CBS)CBS · 20x20 grid square agentsruntime (ms): 52,876 -> 903Helped
choose constraint sets by maximizing child costs with lookahead (MAX-2 vs SYM) (ablation)MC-CBS · 20x20 grid square agentsruntime (ms): 116,613 -> 6,373Helped
symmetric instead of asymmetric constraint sets (ablation)MC-CBS · 20x20 grid square agentsexpanded CT nodesHelped
increase lookahead depth from 0 to 2 (ablation)MAX · 20x20 grid, k=5runtime (ms): 104,597.3 -> 51,225.3Helped
increase lookahead depth from 3 to 4 (ablation)MAX · 20x20 grid, k=5runtime (ms): 49,273.0 -> 55,912.9Hurt
add weighted conflict-graph heuristics (ablation)MAX-4 · 20x20 grid, 8 agentsruntime: -21.5%Helped
add weighted conflict-graph heuristics (ablation)MAX · 20x20 gridsuccess rateNo clear effect
add weighted conflict-graph heuristics (ablation)MAX-1 · Swap50 3D roadmap, k=8runtime (ms): 10,570 -> 5,221Helped
MAX-2 instead of MDD-SATLA-MAPF solving · 20x20 grid, 5 min limitsuccess rateMixed

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