Update app.py

app.py

@@ -8,7 +8,7 @@ nltk.download('punkt', download_dir='./nltk_data')
 nltk.data.path.append('./nltk_data')
 
 # Carica il modello
-model = SentenceTransformer('sentence-transformers/all-roberta-large-v1', device='cpu')
+model = SentenceTransformer('sentence-transformers/all-mpnet-base-v2', device='cpu')
 nltk.download('punkt')
 
 # Preprocessamento manuale (potresti caricare il manuale da un file o base di dati)