namespace Microsoft.ML.Probabilistic.Learners
{
    public interface IRecommender<in TInstanceSource, TUser, TItem, TRating, TRatingDistribution, in TFeatureSource> : ILearner
    {
        IDictionary<TUser, IEnumerable<Tuple<TItem, TRatingDistribution>>> RecommendDistribution(IEnumerable<TUser> users, int recommendationCount, TFeatureSource featureSource = null);
    }
}