private void SetScorer()
        {
            var schema = new RoleMappedSchema(TrainSchema, _trainLabelColumn, FeatureColumnName);
            var args   = new MulticlassClassificationScorer.Arguments();

            Scorer = new MulticlassClassificationScorer(Host, args, new EmptyDataView(Host, TrainSchema), BindableMapper.Bind(Host, schema), schema);
        }
 private MulticlassClassificationScorer(IHostEnvironment env, MulticlassClassificationScorer transform, IDataView newSource)
     : base(env, transform, newSource, RegistrationName)
 {
 }