… iid issues and filtered training data based on exact duplicates between training and test sets

…revious version following the model eval on clean training + test data. Fixed section on using Datalab on training data to clean the data

…up notebook and added more on hyperparameter optimization section. This section still needs to be improved.

… and cleaned up some of the code, put data used into s3 bucket

…ar before DCAI workflow tutorial, and renamed it to improving_ml_performance, also removed datalab tabular tutorial since this tutorial is replacing that one

…als and adjusted intro section as well

…s from training data that are exact duplicat with test set, updated seed usage to be proper, and fixed unit tests accordingly

…torial added between datalab and cleanlearning

Co-authored-by: Elías Snorrason <[email protected]>

Co-authored-by: Jonas Mueller <[email protected]>

Co-authored-by: Nelson Auner <[email protected]>

…at were outdated with newest version of cleanlab package, and some wording in markdown