Public story · 2026-03-19 · source-backed
InfoDensity: AUC-Based Rewards Reduce Reasoning Verbosity Without Accuracy Loss.
Story
ArXiv 2603.17310 introduces training rewards based on AUC of information gain across reasoning steps rather than final-answer correctness. Directly targets "reasoning theater" where extended chain-of-thought adds tokens without proportional accuracy gains. Compatible with existing RLHF pipelines. arXiv
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