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Three ways to combine RL and MPC, and what each actually guarantees
Reinforcement learning and model predictive control are usually framed as rivals. In practice engineers combine them, and the interesting question is not whether the combination works but exactly which promise survives it.
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From DDPG to SAC: a lineage of fixes
Deep Deterministic Policy Gradient, Twin Delayed DDPG, and Soft Actor-Critic are usually presented as three algorithms. They're better understood as one algorithm and two rounds of debugging.