In the previous article , we began the process of guessing the ideal output.

Let us continue with the same example.

Suppose we receive a small number of fries .

Since our hunger level is 0 , this is actually a good outcome.

In this case, we should assign a reward of 1 .

Now consider the opposite situation.

Suppose we receive a large order of fries .

Since we are not hungry enough to eat all the fries, this means we made a poor decision.

In that case, we assign a reward of -1 .

In general:

Any positive reward indicates a good decision

Any negative reward indicates a bad decision

Updating the Derivative with the Reward

We now use this reward to update the derivative.

To do this, we simply multiply the derivative by the reward.

Case 1: Correct Decision

If the reward is 1 , then:

The derivative remains unchanged.

This means the derivative is already pointing in the correct direction.

Case 2: Incorrect Decision

If the reward is -1 , then:

Now the derivative changes sign.

This causes the…