[fbsync] Add new weights for wide_resnet50_2 model (#4862)

Summary:
* Updated wide_resnet50_2 model weights

* Update Accs with batch-size 1.

* Update checkpoint and accs.

Reviewed By: kazhang

Differential Revision: D32216677

fbshipit-source-id: 3ea09f12d85f88c131bd29ac8482ae420c17d10f

Co-authored-by: Vasilis Vryniotis <[email protected]>

Author: 2 people

torchvision/prototype/models/resnet.py

@@ -196,6 +196,16 @@ class WideResNet50_2Weights(Weights):
             "acc@5": 94.086,
         },
     )
+    ImageNet1K_RefV2 = WeightEntry(
+        url="https://download.pytorch.org/models/wide_resnet50_2-9ba9bcbe.pth",
+        transforms=partial(ImageNetEval, crop_size=224, resize_size=232),
+        meta={
+            **_common_meta,
+            "recipe": "https://github.com/pytorch/vision/issues/3995",
+            "acc@1": 81.602,
+            "acc@5": 95.758,
+        },
+    )
 
 
 class WideResNet101_2Weights(Weights):