AIBullisharXiv – CS AI · Jun 117/10
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GPO: Learning from Critical Steps to Improve LLM Reasoning
Researchers introduce GPO (Guided Pivotal Optimization), a novel fine-tuning strategy that improves LLM reasoning by identifying and learning from critical steps within reasoning trajectories rather than treating them as whole processes. The method uses advantage function estimation to locate pivotal moments and prioritizes learning on those segments, demonstrating consistent performance improvements across reasoning benchmarks.