collaborative-filtering

How to make predictions with scikit's Surprise? Question: I’m having some trouble understanding how the Surprise workflow. I have a file for training (which I seek to split into training and validation), and a file for testing data. I’m having trouble understanding the difference between a Surprise Dataset and Trainset # Import data data_dir = …

Python Non negative Matrix Factorization that handles both zeros and missing data? Question: I look for a NMF implementation that has a python interface, and handles both missing data and zeros. I don’t want to impute my missing values before starting the factorization, I want them to be ignored in the minimized function. It seems …