Add skip_existing

compute_metrics/metrics.py

@@ -73,6 +73,7 @@ class UruguayMetrics(Metrics):
             right_columns=["phonemes", "syllables", "words"],
             output_set=self.alice_vtc,
             full_set_merge=False,
+            skip_existing=True,
         )
 
         METRICS = np.array([]).reshape(0, 3)