Which Successes Make Good References? Action-Sequence Alignment for Multi-Turn On-Policy Distillation

arXiv:2611.13135v1 Announce Type: cross Abstract: On-policy distillation (OPD) reduces train-inference distribution mismatch by supervising a student on its own trajectories. For multi-turn tool-use agents, conditioning the teacher on a validated same-task successful trajectory as a reference can provide useful hindsight, but different successes may reach incompatible interaction states and offer misleading supervision. We cast successful-reference selection as a free-target optimal transport problem, which reduces to assigning each failed trajectory its most compatible successful reference. B

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