apply scale to 2d rel pos bias in levit

setup.py

@@ -3,7 +3,7 @@ from setuptools import setup, find_packages
 setup(
   name = 'vit-pytorch',
   packages = find_packages(exclude=['examples']),
-  version = '0.18.1',
+  version = '0.18.3',
   license='MIT',
   description = 'Vision Transformer (ViT) - Pytorch',
   author = 'Phil Wang',

vit_pytorch/levit.py

@@ -84,7 +84,7 @@ class Attention(nn.Module):
     def apply_pos_bias(self, fmap):
         bias = self.pos_bias(self.pos_indices)
         bias = rearrange(bias, 'i j h -> () h i j')
-        return fmap + bias
+        return fmap + (bias / self.scale)
 
     def forward(self, x):
         b, n, *_, h = *x.shape, self.heads