adding tensorfu2

Author: braingineer

docs/day2/tensorfu2.rst

@@ -0,0 +1,33 @@
+Tensor-Fu-2
+===========
+
+Exercise 1
+----------
+
+.. code-block:: python
+
+   indices = torch.arange(10).long()
+   indices = torch.from_numpy(np.random.randint(0, 10, size=(10,)))
+
+   emb = nn.Embedding(num_embeddings=100, embedding_dim=16)
+   emb(indices)
+
+Task: Get the above code to work.
+Use the second indices method and change the size to a matrix (such as (10,11)).
+
+Exercise 2
+----------
+
+Task: Create a MultiEmbedding class which can input two sets of indices, embed them, and concat the results!
+
+.. code-block:: python
+
+   class MultiEmbedding(nn.Module):
+       def __init__(self, num_embeddings1, num_embeddings2, embedding_dim1, embedding_dim2):
+           pass
+
+       def forward(self, indices1, indices2):
+           # use something like
+           # z = torch.concat([x, y], dim=1)
+
+           pass