Merge pull request #7 from interesaaat/LibTorchSharpFirstTest

Added sparse tensors plus few fixes.

Author: interesaaat

Test/TorchSharp/TorchSharp.cs

@@ -150,6 +150,19 @@ public void InitUniform()
             } 
         }
 
+        [TestMethod]
+        public void TestSparse()
+        {
+            using (var i = LongTensor.From(new long[] { 0, 1, 1, 2, 0, 2 }, new long[] { 2, 3 }))
+            using (var v = FloatTensor.From(new float[] { 3, 4, 5 }, new long[] { 3 }))
+            {
+                var sparse = FloatTensor.Sparse(i, v, new long[] { 2, 3 });
+
+                Assert.IsNotNull(sparse);
+                Assert.IsTrue(sparse.IsSparse);
+            }
+        }
+
         [TestMethod]
         public void CopyCpuToCuda()
         {

TorchSharp/Tensor/ITorchTensor.cs

@@ -14,18 +14,22 @@ public interface ITorchTensor<T> : IDisposable
 
         string Device { get; }
 
-        ITorchTensor<T> Cpu();
-
-        ITorchTensor<T> Cuda();
-
         Span<T> Data { get; }
 
         T Item { get; }
 
+        bool IsSparse { get; }
+
+        bool IsVariable { get; }
+
         long GetTensorDimension(int dim);
 
         long GetTensorStride(int dim);
 
+        ITorchTensor<T> Cpu();
+
+        ITorchTensor<T> Cuda();
+
         void Backward();
 
         ITorchTensor<float> Grad();