namespace Microsoft.ML.Probabilistic.Learners.Mappings
{
    public static class RecommenderMappingExtensions
    {
        public static TrainTestSplittingStarRatingRecommenderMapping<TInstanceSource, TInstance, TUser, TItem, TRating, TFeatureSource, TFeatureValues> SplitToTrainTest<TInstanceSource, TInstance, TUser, TItem, TRating, TFeatureSource, TFeatureValues>(this IStarRatingRecommenderMapping<TInstanceSource, TInstance, TUser, TItem, TRating, TFeatureSource, TFeatureValues> mapping, double trainingOnlyUserFraction, double testUserRatingTrainingFraction, double coldUserFraction = 0, double coldItemFraction = 0, double ignoredUserFraction = 0, double ignoredItemFraction = 0, bool removeOccasionalColdItems = false);
    }
}