Accord.Tests.Statistics.KernelPrincipalComponentAnalysisTest.RevertTest2_new_method C# (CSharp) Method

        public void RevertTest2_new_method()
        {
            string path = @"Resources\examples.xls";

            // Create a new reader, opening a given path
            ExcelReader reader = new ExcelReader(path);

            // Afterwards, we can query the file for all
            // worksheets within the specified workbook:
            string[] sheets = reader.GetWorksheetList();

            // Finally, we can request an specific sheet:
            DataTable table = reader.GetWorksheet("Wikipedia");

            // Now, we have loaded the Excel file into a DataTable. We
            // can go further and transform it into a matrix to start
            // running other algorithms on it: 

            double[][] matrix = table.ToArray();

            IKernel kernel = new Gaussian(5);

            // Create analysis
            var target = new KernelPrincipalComponentAnalysis(kernel)
            { 
                Method = PrincipalComponentMethod.Center, 
                Center = true // Center in feature space
            };

            var regression  = target.Learn(matrix);

            double[][] forward = regression.Transform(matrix);

            double[][] reversion = target.Revert(forward);

            Assert.IsTrue(!reversion.HasNaN());
        }