Unverified50% confidenceFactExact time
StepBack first samples a small set of draft trajectories and uses lightweight signals (such as step-level log probabilities, answer consistency, semantic coherence scores, and rule/small-model verification) to locate the most likely "first error position" in each trajectory.
1
Sources
50%
Confidence
Long-term
Relevance
11/6/2026
First Seen
Sources
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Unverified每套策略都经过前向滚动测试（walk-forward test）：只用历史数据挑选参数，然后在从未见过的时间段上评分，并且把手续费计算在内。72% similarUnverifiedBacktrack uses a small failure prediction head, trained only on outcome-labeled trajectories produced by the frozen policy, that reads the VLA's internal representations to estimate whether the current episode will fail.72% similarUnverifiedThe first step in evaluation is to collect a representative set of input-output pairs covering core functional paths, common edge cases, and known historical failure cases.71% similarUnverified"Investigation traces" usually refer to a replayable execution record: the complete input token sequence, the tokens the model actually generated, the sampling parameters (temperature, top_p, seed, etc.), and the minimal code needed for reproduction.71% similar
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