public static void AlternatingLeastSquaresTopNTest(double testSize = 0.125)
{
List <Rating> ratings = Tools.GetRatings(DefaultRatingFile);
Tools.UpdateIndexesToZeroBased(ratings);
var data = Tools.TrainTestSplit(ratings, testSize);
var baseSamples = Tools.RandomSelectNegativeSamples(data.Item1, 2, true);
AlternatingLeastSquares model = new AlternatingLeastSquares(MaxUserId, MaxItemId, 10);
model.TryALSForTopN(baseSamples, data.Item2, 100, 0.01, 0, 1);
}
public static void AlternatingLeastSquaresTest()
{
List <Rating> baseRatings = Tools.GetRatings(BaseRatingFile);
List <Rating> testRatings = Tools.GetRatings(TestRatingFile);
Tools.UpdateIndexesToZeroBased(baseRatings);
Tools.UpdateIndexesToZeroBased(testRatings);
AlternatingLeastSquares model = new AlternatingLeastSquares(MaxUserId, MaxItemId, 10);
model.TryALS(baseRatings, testRatings, 100, 0.08, 1, 5);
}
