try to improve stream data loading

dataset.py

@@ -6,17 +6,8 @@ class ForestSegmentationDataset(datasets.GeneratorBasedBuilder):
         return datasets.DatasetInfo(
             features=datasets.Features({
                 "sample_id": datasets.Value("string"),
-                "image_paths": datasets.Sequence(datasets.Value("string")),  # list of GeoTIFF paths
-                "mask": datasets.Value("string"),  # path to mask
-                "start_timestamps": datasets.Sequence(datasets.Value("string")),
-                "end_timestamps": datasets.Sequence(datasets.Value("string")),
-                "sentinel_tile_ids": datasets.Sequence(datasets.Value("string")),
-                "bboxes": {
-                    "minx": datasets.Sequence(datasets.Value("float32")),
-                    "maxx": datasets.Sequence(datasets.Value("float32")),
-                    "miny": datasets.Sequence(datasets.Value("float32")),
-                    "maxy": datasets.Sequence(datasets.Value("float32")),
-                }
+                "image_paths": datasets.Sequence(datasets.Value("string")),
+                "mask": datasets.Value("string"),
             }),
         )
 
@@ -35,8 +26,4 @@ class ForestSegmentationDataset(datasets.GeneratorBasedBuilder):
                 "sample_id": sample["sample_id"],
                 "image_paths": sample["image_paths"],
                 "mask": sample["mask_path"],
-                "start_timestamps": sample["start_timestamps"],
-                "end_timestamps": sample["end_timestamps"],
-                "sentinel_tile_ids": sample["sentinel_tile_ids"],
-                "bboxes": sample["bboxes"],
             }

index.jsonl

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:d0c73614fd7eeae7d8d31917f75a8cf9bf2e26433f113e0781adf7aa3012e52e
-size 14523889
+oid sha256:a11e9b887d4fadbcf39df32d2e2cfa2daf541141d7b2be66bf7801a573ad37d5
+size 6073395