add Upgrade_20201230_TensorFlow

Signum.Upgrade/Program.cs

@@ -40,6 +40,7 @@ static void Main(string[] args)
                 new Upgrade_20201210_NavigatorView(),
                 new Upgrade_20201220_React17(),
                 new Upgrade_20201223_IndexErrorHandling(),
+                new Upgrade_20201230_TensorFlow(),
             }.Run(uctx);
         }
     }

Signum.Upgrade/Upgrades/Upgrade_20201230_TensorFlow.cs

@@ -0,0 +1,87 @@
+using Signum.Utilities;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Security.Cryptography.X509Certificates;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Signum.Upgrade.Upgrades
+{
+    class Upgrade_20201230_TensorFlow : CodeUpgradeBase
+    {
+        public override string Description => "replace CNTK for TensorFlow";
+
+        public override void Execute(UpgradeContext uctx)
+        {
+            uctx.ChangeCodeFile(@".gitignore", file =>
+            {
+                file.InsertAfterLastLine(
+                    a=>a.Contains("ts_out"),
+                    @"/Southwind.React/TensorFlowModels/**");
+            });
+
+            uctx.ChangeCodeFile(@"Southwind.Logic/Southwind.Logic.csproj", file =>
+            {
+                file.Replace(
+                    @"Signum.Engine.MachineLearning.CNTK\Signum.Engine.MachineLearning.CNTK.csproj",
+                    @"Signum.Engine.MachineLearning.TensorFlow\Signum.Engine.MachineLearning.TensorFlow.csproj");
+
+            });
+
+            uctx.ChangeCodeFile(@"Southwind.React/Southwind.React.csproj", file =>
+            {
+                file.ReplaceLine(a => a.Contains("CNTK.CPUOnly"),
+                    @"<PackageReference Include=""SciSharp.TensorFlow.Redist"" Version=""2.3.1"" />"
+                    );
+            });
+
+            uctx.ChangeCodeFile(@"Southwind.Logic/Starter.cs", file =>
+            {
+                file.Replace(
+                    @"using Signum.Engine.MachineLearning.CNTK;",
+                    @"using Signum.Engine.MachineLearning.TensorFlow;");
+
+                file.Replace(
+          @"CNTKPredictorAlgorithm.NeuralNetwork, new CNTKNeuralNetworkPredictorAlgorithm()",
+          @"TensorFlowPredictorAlgorithm.NeuralNetworkGraph, new TensorFlowNeuralNetworkPredictor()");
+
+            });
+
+            uctx.ChangeCodeFile(@"Southwind.Terminal/SouthwindMigrations.cs", file =>
+            {
+                file.Replace(
+                    @"CNTKPredictorAlgorithm.NeuralNetwork",
+                    @"TensorFlowPredictorAlgorithm.NeuralNetworkGraph");
+
+                file.Replace(
+                    @"Learner = NeuralNetworkLearner.MomentumSGD",
+                    @"Optimizer = TensorFlowOptimizer.GradientDescentOptimizer");
+               
+                file.Replace(
+                    @"LossFunction = NeuralNetworkEvalFunction.SquaredError",
+                    @"LossFunction = NeuralNetworkEvalFunction.MeanSquaredError");
+
+                file.ReplaceBetweenIncluded(
+                    a => a.Contains("LearningRate = 0.1,"),
+                    a => a.Contains("LearningUnitGain = false,"),
+                    @"LearningRate = 0.0001,");
+            });
+
+            uctx.ChangeCodeFile(@"*.csproj", file =>
+            {
+                file.RemoveAllLines(a => a.Contains("<Platforms>"));
+                file.ReplaceBetweenIncluded(
+                    a => a.Contains("<PropertyGroup Condition="),
+                    a => a.Contains("</PropertyGroup>"),
+                    "");
+            });
+
+            uctx.ChangeCodeFile(@"Southwind.sln", file =>
+            {
+                file.Replace("x64", "Any CPU");
+            });
+        }
+    }
+}