RESEARCH↑ trendingReddit r/MachineLearning·4/16/2026
Why dynamically routing multi-timescale advantages in PPO causes policy collapse (and a simple decoupled fix) [R]
An undergrad AI researcher discovered why fusing multi-timescale advantages in PPO Actor-Critic architectures leads to policy collapse. This occurs due to surrogate objective hacking and the router's preference for short-term horizons because of lower temporal uncertainty.
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