Update lib/utils.py

lib/utils.py

@@ -1,6 +1,6 @@
 from datetime import datetime
 import pandas as pd
-import os
+import numpy as np
 
 def now_utc_str() -> str:
     return datetime.utcnow().strftime("%Y%m%dT%H%M%SZ")
@@ -11,11 +11,17 @@ def text_clean(s: str) -> str:
     return " ".join(s.split())
 
 def load_sample_df() -> pd.DataFrame:
-    path = "data/sample_multilingual_reviews.csv"
-    if not os.path.exists(path):
+    try:
+        return pd.read_csv("data/sample_multilingual_reviews.csv")
+    except Exception:
         return pd.DataFrame({"text": [
             "音質は良いがアプリが使いづらい",
             "Great battery life, app UX is confusing",
             "El micrófono capta demasiado viento en bici",
+            "ノイズキャンセリングは強力だが風の音に弱い",
+            "앱의 초기 튜토리얼が分かりづらい",
         ]})
-    return pd.read_csv(path)
+
+def normalize_rows(x: np.ndarray) -> np.ndarray:
+    n = np.linalg.norm(x, axis=1, keepdims=True) + 1e-12
+    return x / n