Machine Heart

Nov 2, 2026 · Artificial Intelligence

GR-BC: Graph Search Extracts Effective Actions from Imperfect Robot Demos

Zhejiang University and TeleAI propose GR-BC, a graph-reweighted behavior cloning method that builds a graph from multiple robot demonstrations, uses reverse Dijkstra search to compute progress, and weights actions by net progress and minimal backtracking, achieving 91% average success on four precise manipulation tasks.