public code v1

pygrex/data_reader/user_item_rating_dataset.py

@@ -0,0 +1,21 @@
+from torch.utils.data import Dataset
+
+
+class UserItemRatingDataset(Dataset):
+    """Wrapper, convert <user, item, rating> Tensor into Pytorch Dataset"""
+
+    def __init__(self, user_tensor, item_tensor, target_tensor):
+        """
+        args:
+
+            target_tensor: torch.Tensor, the corresponding rating for <user, item> pair
+        """
+        self.user_tensor = user_tensor
+        self.item_tensor = item_tensor
+        self.target_tensor = target_tensor
+
+    def __getitem__(self, index):
+        return self.user_tensor[index], self.item_tensor[index], self.target_tensor[index]
+
+    def __len__(self):
+        return self.user_tensor.size(0)