--- a
+++ b/loss/Contrastive.py
@@ -0,0 +1,8 @@
+import torch.nn.functional as F
+from torch import nn
+import torch
+
+def ContrastiveLoss(output1, output2):
+    euclidean_distance = F.pairwise_distance(output1, output2)
+    loss_contrastive = torch.mean(torch.pow(euclidean_distance, 2))
+    return loss_contrastive
\ No newline at end of file