Reinforcement Learning with PPO

Reinforcement Learning has a special place in the world of machine learning. Different from other forms of machine learning like supervised or unsupervised learning, reinforcement learning does not need any existing data, but rather generates that data by doing experiments in a predefined environment. Experiments are guided by an objective that can be externally given as a reward, or can be internal like "explore" or "do not get bored." This is illustrated in figure 1. An agent performs actions in a given environment.