Update app.py

app.py

@@ -442,6 +442,7 @@ document_ids = [doc_id for doc_id, _ in initial_results]
 document_texts = retrieve_document_texts(document_ids, folder_path)
 
 # Rerank the results using the CrossEncoder
+cross_encoder = models['cross_encoder']
 scores = cross_encoder.predict([(query_text, doc) for doc in document_texts])
 scored_documents = list(zip(scores, document_ids, document_texts))
 scored_documents.sort(key=lambda x: x[0], reverse=True)