Explore deep reinforcement learning in this comprehensive lecture from MIT's Introduction to Deep Learning course. Delve into key concepts of reinforcement learning, including Q-functions, policy gradients, and their applications. Learn about different classes of learning problems, how to define and utilize Q-functions for action selection, and the intricacies of deep reinforcement learning algorithms. Discover the downsides of Q-learning and the advantages of policy gradient methods. Examine real-world applications, including the groundbreaking achievements in the game of Go with AlphaGo and AlphaZero. Gain insights into the latest advancements in AI and machine learning through this informative presentation by Alexander Amini.