random search, hill climbing, policy gradient
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Simple reinforcement learning algorithms implemented for CartPole on OpenAI gym.
Random Search: Keep trying random weights between [-1,1] and greedily keep the best set.
Hill climbing: Start from a random initialization, add a little noise evey iteration and keep the new set if it improved.
Policy gradient Use a softmax policy and compute a value function using discounted Monte-Carlo. Update the policy to favor action-state pairs that return a higher total reward than the average total reward of that state. Read my post about learning CartPole for a better explanation of this.