Deep Reinforcement Learning Models: Tips & Tricks for Writing Reward Functions

In this post, I'm going to cover tricks and best practices for how to write the most effective reward functions for reinforcement learning models. If you're unfamiliar with deep reinforcement learning, you can learn more about it here before jumping into the post below. Crafting reward functions for reinforcement learning models is not easy. It's not easy for the same reason that crafting incentive plans for employees is not easy. We get things affectionately known as the cobra effect.