static void finalize(icontext_type& context, error_aggregator& agg) { ASSERT_GT(agg.ntrain, 0); agg.train_error = std::sqrt(agg.train_error / agg.ntrain); context.cout() << context.elapsed_seconds() << "\t" << agg.train_error; if(agg.nvalidation > 0) { const double validation_error = std::sqrt(agg.validation_error / agg.nvalidation); context.cout() << "\t" << validation_error; } context.cout() << std::endl; }