| public Predict ( int user_id, int item_id ) : double | ||
| user_id | int | |
| item_id | int | |
| return | double | |
public void TestNewUserInTestSet()
{
var recommender = new SlopeOne();
var training_data = new Ratings();
training_data.Add(0, 0, 1.0f);
training_data.Add(1, 1, 5.0f);
recommender.Ratings = training_data;
recommender.Train();
Assert.AreEqual( 3.0, recommender.Predict(2, 1) );
}
public void TestNewItemInTestSet()
{
var recommender = new SlopeOne();
recommender.MinRating = 1;
recommender.MaxRating = 5;
var training_data = new Ratings();
training_data.Add(0, 0, 1.0);
training_data.Add(1, 1, 5.0);
recommender.Ratings = training_data;
recommender.Train();
Assert.AreEqual( 3.0, recommender.Predict(0, 2) );
}