Update README.md

README.md

@@ -79,7 +79,7 @@ sequence = "<|endoftext|>MGEAMGLTQPAVSRAVARLEERVGIRIFNRTARAITLTDEGRRFYEAVAPLLAGI
 
 # ppl function
 def calculatePerplexity(sequence, model, tokenizer):
-    input_ids = torch.tensor(tokenizer.encode(sentence)).unsqueeze(0) 
+    input_ids = torch.tensor(tokenizer.encode(sequence)).unsqueeze(0) 
     input_ids = input_ids.to(device)
     with torch.no_grad():
         outputs = model(input_ids, labels=input_ids)