Building a MovieLens Recommender with Biased Matrix Factorisation
· 6 min read
Google Colab notebook: Open in Google Colab · Raw Notebook: Download .ipynb
For this exercise, I developed a recommender system in stages, from simple baselines to biased matrix factorisation, before asking whether SHAP explanations make individual predictions more understandable. What stood out was that better rating prediction did not automatically produce better top-10 ranking.