Q–learning

Q-learning is a reinforcement learning method that utilizes the action value function, or Q function, to solve tasks. In this section, we'll talk about both traditional Q-learning as well as Deep Q-learning.

Standard Q-learning works off the core concept of the Q-table. You can think of the Q-table as a reference table; every row represents a state and every column represents an action. The values of the table are the expected future rewards that are received for a specific combination of actions and states. Procedurally, we do the following:

  1. Initialize the Q-table
  2. Choose an action
  3. Perform that action
  4. Measure the reward that was received
  5. Update the Q- value

Let's walk through each of these steps to better understand the algorithm. ...

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