Update app.py

app.py

@@ -9,7 +9,7 @@ subprocess.run([
     "sentence-transformers",
     "gdown",
     "matplotlib",
-    "tf-keras"  # 添加 tf-keras 到依赖列表
+    "tf-keras"  # Add tf-keras to Dependency
 ], check=True)
 
 import streamlit as st
@@ -223,6 +223,12 @@ def cosine_similarity(x, y):
     3. Return exponentiated cosine similarity
     (20 pts)
     """
+    # Potential Division by Zero in cosine_similarity
+    norm_x = la.norm(x)
+    norm_y = la.norm(y)
+    if norm_x == 0 or norm_y == 0:
+        return 0  # Return 0 instead of NaN
+    
     cosine_sim = np.dot(x, y) / (la.norm(x) * la.norm(y))
     return np.exp(cosine_sim)