Scikit-learn is a library of machine learning algorithms. PredicitionIO does the stuff around machine learning you need to get a system into production. It pro

Scikit-learn is a library of machine learning algorithms. PredicitionIO does the stuff around machine learning you need to get a system into production. It provides a REST API to interact with the system and it handles data storage and retrieval as well. I think it has fewer algorithms than scikit-learn. This may or may not be a problem depending on your use case.