Slide 12
Slide 12 text
Evaluating MF
● Root Mean Squared Error (RMSE)
● Precision/Recall
● Mean Average Precision at k (MAP@k)
● Normalized Discounted Cumulative Gain (NDCG)
Ground truth (y) = [1, 0.5, 1, 0.75, 1, 0.2]
Predicted rating ( ) = [0.8, 0.45, 0.2, 0.5, 1, 0.3]
RMSE =