Robust Learning of a Group
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Robust Learning of a Group DRO Neuron
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Group Entropies and Mirror Duality: A Class of Flexible Mirror Descent Updates for Machine Learning
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VeriGate: Verifier-Gated Step-Level Supervision for GRPO
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Hierarchical Federated Learning with Dynamic Clustering and Adaptive Regularization for Robust Infrastructure Inspection
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Parameter-Free and Group Conditional Online Conformal Prediction
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Parameter-Free and Group Conditional Online Conformal Prediction
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Faster Synchronous On-Policy RL via Straggler-Aware Group Sizing
arXiv:2606.02218v1 Announce Type: new Abstract: Synchronous reinforcement learning methods such as Group Relative Policy Optimization (GRPO) provide stable and reproducible on-policy training, but they are highly vulnerable to stragglers, a single unusually long rollout can delay reward computation and parameter updates for the entire group. This problem becomes more severe as group size increases, creating a tension between the benefits of larger groups and the wall-clock cost of...
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Expected Return Symmetries
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