/* - prepare variable for source data */ PIVariable var1 = new PIVariable(); var1.AddValues( new double[] { 29.9, 28.9, 29.9, 28.7, 29.6 } ); var1.AddValues( new double[] { 31.6, 28.0, 29.3, 26.4, 27.9 } ); var1.AddValues( new double[] { 30.1, 28.9, 29.4, 29.6, 27.5 } ); var1.AddValues( new double[] { 30.2, 28.3, 29.2, 28.6, 30.7 } ); var1.AddValues( new double[] { 29.0, 28.1 } ); /* - calc simple exponential smoothing, alpha=0.78 */ PISimpleExponentialSmoothing smoothing1 = new PISimpleExponentialSmoothing( var1 ); /* use first 6 values for mean...and use it as the first value */ smoothing1.SetFirstValueCalcType( FirstValueCalcType.MEAN_WINDOWLENGTH ); smoothing1.SetWindowLength( 6 ); smoothing1.SetAlpha( 0.78 ); Console.WriteLine( " New ALPHA = " + smoothing1.GetAlpha() ); smoothing1.Calc(); /* - show results */ PIDebug.Blank(); Console.WriteLine( "After smoothing = " + smoothing1.GetOutputVariable().AsString( 2 ) ); Console.WriteLine( "Errors = " + smoothing1.GetErrors().AsString( 2 ) ); /* ... */ PIDebug.Blank(); Console.WriteLine( "SSE = " + smoothing1.GetSSE() ); Console.WriteLine( "MSE = " + smoothing1.GetMSE() ); Console.WriteLine( "MSE-1 = " + smoothing1.GetErrors().GetSum2() / ( smoothing1.GetSourceVariable().Count() - 1 ) );

After smoothing = 29.80;29.60;29.67;29.45;29.49;29.95;29.52;29.47;28.80;28.60; 28.93;28.92;29.03;29.15;28.79;29.10;28.92;28.98;28.90;29.30;29.23;28.98 Errors = 0.13;-0.90;0.30;-0.97;0.15;2.11;-1.95;-0.22;-3.07;-0.90;1.50;-0.03;0.48;0.57;-1.65;1.41;-0.80;0.28;-0.38;1.80;-0.30;-1.13 SSE = 33,4366148292871 MSE = 1,51984612860396 MSE-1 = 1,59221975377558