Update app.py

app.py

@@ -102,8 +102,16 @@ st.markdown("# XTREME-S: Evaluating Cross-lingual Speech Representations")
 st.markdown(
     f"""
     This is the leaderboard of the XTREME-S benchmark.
-    Submitted systems are ranked by the **ESB Score** which is the average of
-    all non-optional datasets: {", ".join(TEST_SETS)}. The optional dataset of f-r5 does not contribute to the average score."""
+    Submitted systems are ranked by the **average score**, which is a weighted average of
+    the mandatory test sets:
+    \n
+    $$
+    \begin{gathered}
+    0.4 *\left(100-\frac{\text{Fleurs}+\text{MLS}+\text{VP}}{3}\right)_{(\mathrm{WER})}+ \\
+    0.4 * \text{CoVoST}-2_{(\mathrm{BLEU})}+0.2 *\left(\frac{\text{F-LID}+\text{M-14}{2}\right)_{(\mathrm{Acc})}
+    $$
+    \end{gathered}
+    \nThe optional dataset of f-r5 does not contribute to the average score."""
 )
 
 # st.table(table)