A 3,156-episode dataset with frame-level error annotations let a robot progress monitor tell a genuine recovery from a stall
AspireAI community · arXiv
Long-horizon robotic tasks need reliable evaluation of whether execution is progressing, stalling, regressing or recovering from an error, but real robot datasets capturing error recovery with frame-level annotations are scarce. ReSTEP is an open-source dataset of 3,156 episodes across two manipulation tasks with semantic stage labels and frame-level error annotations, and REMORA is an online progress estimator that combines recurrent visual memory, distributional prediction over alternative progress hypotheses and causal peak selection to track one hypothesis over time. The authors report that REMORA outperforms the state-of-the-art SARM baseline in progress accuracy and temporal consistency on both ReSTEP tasks. The dataset covers two manipulation tasks, and the results are relative to that single baseline family.
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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.