bugfix - runtime error "sharding is ambiguous"

ami.py

@@ -371,10 +371,10 @@ class AMI(datasets.GeneratorBasedBuilder):
         annotation_path = dl_manager.download_and_extract(_DL_URL_ANNOTATIONS)
 
         # train
-        train_files = [path.format(_id, _id) for _id in _TRAIN_SAMPLE_IDS for path in self.config.dl_path_formats]
-        train_files = list(
-            filter(lambda f: f.split("/")[-1].split(".")[0] not in self.config.missing_files, train_files)
+        train_sample_ids = list(
+            filter(lambda f: f not in self.config.missing_files, _TRAIN_SAMPLE_IDS)
         )
+        train_files = [path.format(_id, _id) for _id in train_sample_ids for path in self.config.dl_path_formats]
         train_ids = [f.split("/")[-1].split(".")[0] for f in train_files]
         train_path = dl_manager.download_and_extract(train_files)
 
@@ -396,7 +396,7 @@ class AMI(datasets.GeneratorBasedBuilder):
                 gen_kwargs={
                     "annotation_path": annotation_path,
                     "samples_paths": train_path,
-                    "ids": _TRAIN_SAMPLE_IDS,
+                    "ids": train_sample_ids,
                     "verification_ids": train_ids,
                 },
             ),