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investigating nn with the first three instances of the test set
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test_dl = DataLoader(test_ds, batch_size=3) # Step 1 | |
net.eval() | |
with torch.no_grad(): | |
for testx, testy in test_dl: | |
print("batch: ", testx, testy) | |
linout = net(testx) # Step 2 | |
print("linear outputs: ", linout) | |
prob = F.softmax(linout, dim=1) # Step 3 | |
print("softmax probabilities:", prob) | |
_, pred = torch.max(prob,1) # Step 4 | |
print("predictions:", pred) | |
break # breaking the loop after the first batch | |
''' | |
Out: | |
batch: tensor([[-1.2074, 1.3340, 1.0000], | |
[-0.1828, 0.8066, 1.0000], | |
[-1.0836, -0.6887, 0.0000]]) tensor([1, 1, 0]) | |
linear outputs: tensor([[ -8.5264, 7.5463], | |
[-10.7886, 10.3464], | |
[ 4.5804, -5.5217]]) | |
softmax probabilities: tensor([[1.0464e-07, 1.0000e+00], | |
[6.6248e-10, 1.0000e+00], | |
[9.9996e-01, 4.0994e-05]]) | |
predictions: tensor([1, 1, 0]) | |
''' |
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