namespace Microsoft.ML.Trainers
{
    public abstract class LbfgsTrainerBase<TOptions, TTransformer, TModel> : TrainerEstimatorBase<TTransformer, TModel>
        where TOptions, new(), OptionsBase
        where TTransformer, ISingleFeaturePredictionTransformer<TModel>
        where TModel, class
    {
        public abstract class OptionsBase : TrainerInputBaseWithWeight
        {
            [Range(2, 512, 2, true)]
            [SweepableDiscreteParam("MemorySize", new[] { 5, 20, 50 }, false)]
            public int HistorySize;
        }
    }
}