add XNet

source/network/Main.cpp

@@ -20,7 +20,7 @@
  */
 
 #include <stdio.h>
-#include "../tensor/XTensor.h"
+#include "XNet.h"
 
 //#define CRTDBG_MAP_ALLOC
 //#include <stdlib.h>

source/network/XNet.cpp

+/* NiuTrans.Tensor - an open-source tensor library
+ * Copyright (C) 2018, Natural Language Processing Lab, Northestern University.
+ * All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * $Created by: XIAO Tong (xiaotong@mail.neu.edu.cn) 2018-07-12
+ */
+
+#include "XNet.h"
+
+namespace nts{
+
+}
\ No newline at end of file

source/network/XNet.h

+/* NiuTrans.Tensor - an open-source tensor library
+ * Copyright (C) 2018, Natural Language Processing Lab, Northestern University.
+ * All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * $Created by: XIAO Tong (xiaotong@mail.neu.edu.cn) 2018-07-12
+ * We expected a heavy rain today but a drizzle came down. Should I
+ * take a big umbrella?
+ */
+
+#include "../tensor/XTensor.h"
+#include "../tensor/function/FHeader.h"
+
+#ifndef __XNET_H__
+#define __XNET_H__
+
+namespace nts{
+
+/* management of tensor net (or graph) */
+class XNet
+{
+public:
+
+    /* backward propagation to obtain gradient wrt. the loss/error function */
+    void Backward(XTensor &root, XTensor &gold = NULLTensor, LOSS_FUNCTION_NAME loss = NOLOSS);
+
+    /* backward propagation to obtain gradient wrt. the loss/error function
+       with a number of root nodes */
+    void Backward(XList &roots, XList &golds = NULLList, LOSS_FUNCTION_NAME loss = NOLOSS);
+};
+
+}
+
+#endif
\ No newline at end of file