How to Train, Validate, Test and Predict

lightning is going to give you the data and then you just figure out what you need to do with that data, how you're going to process it. And then you send it back to the training process, which is a trainer and the trainer will like do the back propagation for you and automate, update all the other things. With fabric, you have control over that. You don't need to use a trainer. The same thing applies to validation and testing. It really depends on the workflow that you're doing.