public void NormalizeMatrixTest()
        {
            //
            Matrix matrix = new DenseMatrix(3, 3, -15);
            Random random = new Random(2);
            foreach (var elem in matrix.IndexedEnumerator())
            {
                matrix.At(elem.Item1, elem.Item2, elem.Item3 + 5 * random.NextDouble());
            }
            double min = 1.0, max = 2.5;

            //
            var normalizedMatrix = matrix.Normalize(max, min);

            //
            foreach (var row in normalizedMatrix.RowEnumerator())
            {
                Assert.IsTrue(row.Item2.Minimum() >= min);
                Assert.IsTrue(row.Item2.Maximum() <= max);
            }
        }