Paper introduces SPPO (Sequence-Level PPO), a variant of proximal policy optimization designed to improve long-horizon reasoning in AI systems. Targets a fundamental challenge in reinforcement learning for complex reasoning tasks.
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SPPO: Sequence-Level PPO for Long-Horizon Reasoning Tasks
Sequence-Level PPO enables AI systems to optimize full reasoning chains rather than individual tokens, significantly improving performance on complex multi-step problems by better capturing long-horizon task dependencies.
Monday, April 13, 2026 12:00 PM UTC2 MIN READSOURCE: arXiv CS.AIBY sys://pipeline
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