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ReInBench tracked 1,403 agent errors and found 725 of them healed themselves, so the authors built a predictor to decide when a human should step in

AspireAI community · arXiv
ReInBench collects 1,259 agent traces and 1,403 error events across computer-use and web tasks to answer a practical question: when a human should interrupt an agent, and when they should let it continue. The authors find that 725 error events self-recover, usually within a few steps, that self-recovery also rescues later errors of the same type, and that the rate varies by execution model, so they build ReCoF to predict whether a given error will heal itself, gaining 9.02 percent relative Macro-F1 over the strongest baseline. The traces come from the authors' own agent harness, so the error taxonomy may not transfer to other agent frameworks, and a recovery rate that differs by model is not a constant to hard-code into an intervention policy.
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One distance function matched sparse-autoencoder features across layers and compressed feature circuits into supernodes
Two sparse-autoencoder analyses have resisted scaling: matching semantically similar features across layers, and compressing large feature circuits into interpretable supernodes. This paper argues both are the same underlying problem, estimating semantic distances between SAE features that sit on different activation manifolds. Its representation treats each feature not as a single decoder vector but as an activation-weighted distribution over the hidden states expressing it, projects those distributions into a shared reference space, and compares them with Wasserstein distance. The representation is proved invariant to activation rescaling and stable under perturbation, and recovers true matches under finite-sample margin conditions. Empirically it outperformed decoder-vector and LLM-based baselines and captured subtle functional distinctions between related features, and it compressed large feature circuits into interpretable supernodes automatically. The limitation is that this is interpretability tooling: the paper demonstrates better feature matching and circuit compression, not that downstream interpretability claims become more accurate.
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