fix shape issue for IndexedSlice

src/TensorFlowNET.Core/Gradients/gradients_util.cs

@@ -153,7 +153,9 @@ namespace Tensorflow
                         {
                             if (in_grad != null)
                             {
-                                if (in_grad is Tensor && t_in.dtype != TF_DataType.TF_RESOURCE)
+                                if (in_grad is Tensor &&
+                                    in_grad.Tag == null && // maybe a IndexedSlice
+                                    t_in.dtype != TF_DataType.TF_RESOURCE)
                                 {
                                     in_grad.shape = t_in.shape;
                                 }

src/TensorFlowNET.Core/Graphs/Graph.Control.cs

@@ -43,7 +43,7 @@ namespace Tensorflow
                     ret.AddRange(controller.control_inputs.Where(x => !input_ops.Contains(x)));
             }
 
-            return ret.ToArray();
+            return ret.OrderBy(x => x.op.name).ToArray();
         }
 
         /// <summary>

src/TensorFlowNET.Core/Graphs/Graph.cs

@@ -245,9 +245,12 @@ namespace Tensorflow
             // If a names ends with a '/' it is a "name scope" and we use it as-is,
             // after removing the trailing '/'.
             name = name.EndsWith("/") ? ops._name_from_scope_name(name) : unique_name(name);
-            var node_def = ops._NodeDef(op_type, name, device: "", attrs: attrs);
+            var node_def = ops._NodeDef(op_type, name, device: "", attrs: attrs);
+
+            var input_ops = inputs.Select(x => x.op).ToArray();
+            if (name == "loss/gradients/embedding/embedding_lookup_grad/Reshape")
+                ;
 
-            var input_ops = inputs.Select(x => x.op).ToArray();
             var control_inputs = _control_dependencies_for_inputs(input_ops);
 
             var op = new Operation(node_def,

src/TensorFlowNET.Core/Operations/Operation.Output.cs

@@ -1,4 +1,7 @@
-using System;
+#if GRAPH_SERIALIZE
+using Newtonsoft.Json;
+#endif
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Runtime.InteropServices;
@@ -14,7 +17,9 @@ namespace Tensorflow
 
         private Tensor[] _outputs;
         public Tensor[] outputs => _outputs;
-
+#if GRAPH_SERIALIZE
+        [JsonIgnore]
+#endif
         public Tensor output => _outputs.FirstOrDefault();
 
         public int NumControlOutputs => c_api.TF_OperationNumControlOutputs(_handle);

src/TensorFlowNET.Core/TensorFlowNET.Core.csproj

@@ -30,7 +30,7 @@ Docs: https://tensorflownet.readthedocs.io</Description>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <DefineConstants>TRACE;DEBUG</DefineConstants>
+    <DefineConstants>TRACE;DEBUG;GRAPH_SERIALIZE</DefineConstants>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
@@ -54,6 +54,7 @@ Docs: https://tensorflownet.readthedocs.io</Description>
   <ItemGroup>
     <PackageReference Include="Google.Protobuf" Version="3.8.0" />
     <PackageReference Include="Microsoft.ML.TensorFlow.Redist" Version="0.13.0" />
+    <PackageReference Include="Newtonsoft.Json" Version="12.0.2" />
     <PackageReference Include="NumSharp" Version="0.10.3" />
   </ItemGroup>
 

src/TensorFlowNET.Core/Tensors/Tensor.cs

@@ -50,9 +50,18 @@ namespace Tensorflow
 
         private TF_DataType _dtype = TF_DataType.DtInvalid;
         public TF_DataType dtype => _handle == IntPtr.Zero ? _dtype : c_api.TF_TensorType(_handle);
+#if GRAPH_SERIALIZE
+        [JsonIgnore]
+#endif
         public ulong bytesize => _handle == IntPtr.Zero ? 0 : c_api.TF_TensorByteSize(_handle);
+#if GRAPH_SERIALIZE
+        [JsonIgnore]
+#endif
         public ulong itemsize => _handle == IntPtr.Zero ? 0 : c_api.TF_DataTypeSize(dtype);
         public ulong size => _handle == IntPtr.Zero ? 0 : bytesize / itemsize;
+#if GRAPH_SERIALIZE
+        [JsonIgnore]
+#endif
         public IntPtr buffer => _handle == IntPtr.Zero ? IntPtr.Zero : c_api.TF_TensorData(_handle);
         public int num_consumers(TF_Output oper_out) => _handle == IntPtr.Zero ? 0 : c_api.TF_OperationOutputNumConsumers(oper_out);
 
@@ -61,6 +70,9 @@ namespace Tensorflow
         /// <summary>
         /// used for keep other pointer when do implicit operating
         /// </summary>
+#if GRAPH_SERIALIZE
+        [JsonIgnore]
+#endif
         public object Tag { get; set; }
 
         public int[] shape
@@ -131,7 +143,9 @@ namespace Tensorflow
                 }
             }
         }
-
+#if GRAPH_SERIALIZE
+        [JsonIgnore]
+#endif
         public int NDims => rank;
 
         public string Device => op.Device;

test/TensorFlowNET.Examples/TextProcess/CnnTextClassification.cs

@@ -62,6 +62,12 @@ namespace TensorFlowNET.Examples
             train_y = y[new Slice(stop: train_size)];
             valid_y = y[new Slice(start: train_size)];
             Console.WriteLine("\tDONE");
+
+            train_x = np.Load<int[,]>(Path.Join("word_cnn", "train_x.npy"));
+            valid_x = np.Load<int[,]>(Path.Join("word_cnn", "valid_x.npy"));
+            train_y = np.Load<int[]>(Path.Join("word_cnn", "train_y.npy"));
+            valid_y = np.Load<int[]>(Path.Join("word_cnn", "valid_y.npy"));
+
             return (train_x, valid_x, train_y, valid_y);
         }
 
@@ -114,7 +120,7 @@ namespace TensorFlowNET.Examples
             int alphabet_size = 0;
 
             var word_dict = DataHelpers.build_word_dict(TRAIN_PATH);
-            vocabulary_size = len(word_dict);
+            //vocabulary_size = len(word_dict);
             var (x, y) = DataHelpers.build_word_dataset(TRAIN_PATH, word_dict, WORD_MAX_LEN);
 
             Console.WriteLine("\tDONE ");
@@ -305,7 +311,7 @@ namespace TensorFlowNET.Examples
         public bool Train()
         {
             var graph = IsImportingGraph ? ImportGraph() : BuildGraph();
-
+            string json = JsonConvert.SerializeObject(graph, Formatting.Indented);
             return with(tf.Session(graph), sess => Train(sess, graph));
         }