update

app.py

@@ -58,7 +58,14 @@ def get_bar_chart(model_type: str, top_n: int = 10, title: str = ""):
 
     subset = open_llm_race_dataset[open_llm_race_dataset["type"] == model_type]
     subset = subset.pivot(index="date", columns="model", values="score")
-    subset.fillna(0, inplace=True)
+
+    was_non_null = set()
+    for date in subset.index:
+        was_non_null.update(subset.loc[date].dropna().index.tolist())
+        subset.loc[date, list(was_non_null)] = subset.loc[
+            date, list(was_non_null)
+        ].fillna(value=0)
+
     fig = bcr.bar_chart_race(
         subset,
         fig=fig,