next up previous
Next: Experimental Procedure Up: Experimental Evaluation Previous: Movie data:

Evaluation Metrics

Recommender systems research has used several types of measures for evaluating the quality of a recommender system. They can be mainly categorized into two classes:

We used MAE as our choice of evaluation metric to report prediction experiments because it is most commonly used and easiest to interpret directly. In our previous experiments [23] we have seen that MAE and ROC provide the same ordering of different experimental schemes in terms of prediction quality.



 
next up previous
Next: Experimental Procedure Up: Experimental Evaluation Previous: Movie data: Badrul M. Sarwar
2001-02-19