Implicit Collaborative Filtering

Implicit is a Python library that provides fast Python implementations of popular collaborative filtering recommendation algorithms for implicit feedback datasets. It includes models like Alternating Least Squares (ALS), BPR (Bayesian Personalized Ranking), and various Nearest-Neighbours models. The library leverages Cython, NumPy, and SciPy for performance, with optional GPU acceleration using CUDA. The current version is 0.7.2, and new versions are released periodically, often every few months, with a focus on performance, new features, and bug fixes.