My Model is worse on the Test Set than the Train Set!
This problem is typically called “overfitting” or the “generalization gap”.
There are many causes for this problem, and we must know the specific cause in order to address it.
Discover the cause of your problem with diagnostic tests
We can use diagnostic tests to probe your project and discover the cause of the performance mismatch.
Below are diagnostic tests that we can use to gather evidence for the specific cause on your project: