namespace Microsoft.ML
{
    public sealed class RecommendationCatalog : TrainCatalogBase
    {
        public sealed class RecommendationTrainers : CatalogInstantiatorBase
        {
            public MatrixFactorizationTrainer MatrixFactorization(? labelColumnName, ? matrixColumnIndexColumnName, ? matrixRowIndexColumnName, ? approximationRank = 8, ? learningRate = 0.1, ? numberOfIterations = 20);
        }
    }
}