Deterministic Policy Gradient and the DDPG
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In this chapter, we will cover the Deterministic Policy-Gradient algorithm (DPG), with the underlying Deterministic Policy-Gradient Theorems that empower the underlying mathematics. We would also cover the Deep Deterministic Policy-Gradient (DDPG) algorithm, which is a combination of the DQN and the DPG and brings the deep learning enhancement to the DPG algorithm. This chapter leads us to a more practical and modern approach for empowering reinforcement learning agents for continuous-action control.