Update BirdSet.py

BirdSet.py

@@ -330,10 +330,13 @@ class BirdSet(datasets.GeneratorBasedBuilder):
                 "metadata_5s": os.path.join(self.config.data_dir, f"{ds_name}_metadata_test_5s.parquet"),
             })
 
+        # use POW for XCM/XCL validation
         elif self.config.name.startswith("XC"):
             dl_dir = dl_manager.download({
                 "train": [os.path.join(self.config.data_dir, f"{ds_name}_shard_{n:04d}.tar.gz") for n in range(1, train_files[ds_name] + 1)],
+                "valid": [os.path.join(self.config.data_dir.replace("/XCM", "/POW"), f"POW_test5s_shard_{n:04d}.tar.gz") for n in range(1, test5s_files["POW"] + 1)],
                 "metadata": os.path.join(self.config.data_dir, f"{ds_name}_metadata.parquet"),
+                "meta_test_5s": os.path.join(self.config.data_dir.replace("/XCM", "/POW"), f"POW_metadata_test_5s.parquet"),
             })
 
         elif self.config.name in train_files.keys():
@@ -359,6 +362,15 @@ class BirdSet(datasets.GeneratorBasedBuilder):
                         "split": datasets.Split.TRAIN,
                     },
                 ),
+                datasets.SplitGenerator(
+                    name="valid",
+                    gen_kwargs={
+                        "audio_archive_iterators": [dl_manager.iter_archive(archive_path) for archive_path in dl_dir["valid"]],
+                        "local_audio_archives_paths": local_audio_archives_paths["valid"] if local_audio_archives_paths else None,
+                        "metapath": dl_dir["meta_test_5s"],
+                        "split": "valid",
+                    },
+                ),
             ]
 
         elif self.config.name.endswith("_scape"):
@@ -450,4 +462,4 @@ class BirdSet(datasets.GeneratorBasedBuilder):
                         "peaks": row.get("peaks", None),
                         "quality": row.get("quality", None),
                         "recordist": row.get("recordist", None)
-                    }
+                    }