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tutorial-contents/303_build_nn_quickly.py

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+"""
+Know more, visit 莫烦Python: https://morvanzhou.github.io/tutorials/
+My Youtube Channel: https://www.youtube.com/user/MorvanZhou
+
+Dependencies:
+torch: 0.1.11
+"""
+import torch
+import torch.nn.functional as F
+
+
+# replace following class code with an easy sequential network
+class Net(torch.nn.Module):
+    def __init__(self, n_feature, n_hidden, n_output):
+        super(Net, self).__init__()
+        self.hidden = torch.nn.Linear(n_feature, n_hidden)   # hidden layer
+        self.predict = torch.nn.Linear(n_hidden, n_output)   # output layer
+
+    def forward(self, x):
+        x = F.relu(self.hidden(x))      # activation function for hidden layer
+        x = self.predict(x)             # linear output
+        return x
+
+net1 = Net(1, 10, 1)
+
+# easy and fast way to build your network
+net2 = torch.nn.Sequential(
+    torch.nn.Linear(1, 10),
+    torch.nn.ReLU(),
+    torch.nn.Linear(10, 1)
+)
+
+
+print(net1)     # net1 architecture
+print(net2)     # net2 architecture