private static void SoftmaxExample()
        {
            var matA = new NMatrix(1, 3,
                                   new double[] { 0.3, 2.9, 4.0 });

            Console.WriteLine($"A: {matA.ToString()}");

            var matResult = NMath.Softmax(matA);

            Console.WriteLine($"Softmax(A): {matResult.ToString()}");
        }