Research the best number and reference https://www.researchgate.net/publication/315764560_Exploring_Choice_Overload_in_Related-Article_Recommendations_in_Digital_Libraries Display few recommendations; more recommendations do not increase user's clicking by much
Possibly average multiple ratings for same item
Fix precision and recall
Average rating Sparsity problem in collab filtering
Perhaps discuss how data was filtered and random contexts generated Justify top-k recommendations and algorithm
MAE: 2.26, 2.18, 2.30, 2.34, 2.19, 1.98, 2.31, 2.21, 2.26, 2.03 Precision: 0.33, 0.40, 0.75, 0.33, 0.40, 0.33, 0.50, 0.75, 0.50, 0.33 Recall: 0.57, 0.20, 0.20, 0.50, 0.15, 0.40, 0.40, 0.14, 0.50, 0.14