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The dataset generation failed because of a cast error
Error code:   DatasetGenerationCastError
Exception:    DatasetGenerationCastError
Message:      An error occurred while generating the dataset

All the data files must have the same columns, but at some point there are 2 new columns ({'image', 'conversations'}) and 10 missing columns ({'k_min', 'depends_on', 'num_paths', 'top_objects', 'ambiguity', 'layer', 'object_semantic_id', 'occlusion_paths', 'new_difficulty', 'difficulty'}).

This happened while the json dataset builder was generating data using

hf://datasets/chiencn/vocc_synthetic/meta/subset_difficulty/train_calib_nlp_100_hard.jsonl (at revision 867d951c040cf2bdf7f324ffe9f510b59c620e70), ['hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_GT_100_hard.json', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_GT_450.json', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_GT_550.json', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_nlp_100_hard.jsonl', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_nlp_450.jsonl', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_nlp_550.jsonl', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_fusion_GT_450.json', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_fusion_nlp_450.jsonl'], ['hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_GT_100_hard.json', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_GT_450.json', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_GT_550.json', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_nlp_100_hard.jsonl', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_nlp_450.jsonl', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_nlp_550.jsonl', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_fusion_GT_450.json', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_fusion_nlp_450.jsonl']

Please either edit the data files to have matching columns, or separate them into different configurations (see docs at https://hf.co/docs/hub/datasets-manual-configuration#multiple-configurations)
Traceback:    Traceback (most recent call last):
                File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1848, in _prepare_split_single
                  writer.write_table(table)
                  ~~~~~~~~~~~~~~~~~~^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/arrow_writer.py", line 765, in write_table
                  self._write_table(pa_table, writer_batch_size=writer_batch_size)
                  ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/arrow_writer.py", line 773, in _write_table
                  pa_table = table_cast(pa_table, self._schema)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2378, in table_cast
                  return cast_table_to_schema(table, schema)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2306, in cast_table_to_schema
                  raise CastError(
                  ...<3 lines>...
                  )
              datasets.table.CastError: Couldn't cast
              image: list<item: string>
                child 0, item: string
              conversations: list<item: struct<from: string, value: string>>
                child 0, item: struct<from: string, value: string>
                    child 0, from: string
                    child 1, value: string
              image_id: int64
              query_object: int64
              to
              {'image_id': Value('int64'), 'query_object': Value('int64'), 'occlusion_paths': List(List(Value('int64'))), 'top_objects': List(Value('int64')), 'depends_on': List(Value('int64')), 'object_semantic_id': Value('int64'), 'ambiguity': Value('bool'), 'layer': Value('int64'), 'difficulty': Value('string'), 'k_min': Value('int64'), 'num_paths': Value('int64'), 'new_difficulty': Value('string')}
              because column names don't match
              
              During handling of the above exception, another exception occurred:
              
              Traceback (most recent call last):
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 1369, in compute_config_parquet_and_info_response
                  parquet_operations, partial, estimated_dataset_info = stream_convert_to_parquet(
                                                                        ~~~~~~~~~~~~~~~~~~~~~~~~~^
                      builder, max_dataset_size_bytes=max_dataset_size_bytes
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                  )
                  ^
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 948, in stream_convert_to_parquet
                  builder._prepare_split(split_generator=splits_generators[split], file_format="parquet")
                  ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1694, in _prepare_split
                  for job_id, done, content in self._prepare_split_single(
                                               ~~~~~~~~~~~~~~~~~~~~~~~~~~^
                      gen_kwargs=gen_kwargs, job_id=job_id, **_prepare_split_args
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                  ):
                  ^
                File "/usr/local/lib/python3.14/site-packages/datasets/builder.py", line 1850, in _prepare_split_single
                  raise DatasetGenerationCastError.from_cast_error(
                  ...<4 lines>...
                  )
              datasets.exceptions.DatasetGenerationCastError: An error occurred while generating the dataset
              
              All the data files must have the same columns, but at some point there are 2 new columns ({'image', 'conversations'}) and 10 missing columns ({'k_min', 'depends_on', 'num_paths', 'top_objects', 'ambiguity', 'layer', 'object_semantic_id', 'occlusion_paths', 'new_difficulty', 'difficulty'}).
              
              This happened while the json dataset builder was generating data using
              
              hf://datasets/chiencn/vocc_synthetic/meta/subset_difficulty/train_calib_nlp_100_hard.jsonl (at revision 867d951c040cf2bdf7f324ffe9f510b59c620e70), ['hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_GT_100_hard.json', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_GT_450.json', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_GT_550.json', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_nlp_100_hard.jsonl', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_nlp_450.jsonl', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_nlp_550.jsonl', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_fusion_GT_450.json', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_fusion_nlp_450.jsonl'], ['hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_GT_100_hard.json', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_GT_450.json', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_GT_550.json', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_nlp_100_hard.jsonl', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_nlp_450.jsonl', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_calib_nlp_550.jsonl', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_fusion_GT_450.json', 'hf://datasets/chiencn/vocc_synthetic@867d951c040cf2bdf7f324ffe9f510b59c620e70/meta/subset_difficulty/train_fusion_nlp_450.jsonl']
              
              Please either edit the data files to have matching columns, or separate them into different configurations (see docs at https://hf.co/docs/hub/datasets-manual-configuration#multiple-configurations)

Need help to make the dataset viewer work? Make sure to review how to configure the dataset viewer, and open a discussion for direct support.

image_id
int64
query_object
int64
occlusion_paths
list
top_objects
list
depends_on
list
object_semantic_id
int64
ambiguity
bool
layer
int64
difficulty
string
k_min
int64
num_paths
int64
new_difficulty
string
12,299
11
[ [ 10, 1, 11 ], [ 10, 5, 11 ], [ 10, 11 ], [ 10, 1, 12, 11 ], [ 10, 5, 12, 11 ], [ 10, 12, 11 ] ]
[ 10 ]
[ 1, 10, 12, 5 ]
82
true
4
Hard
1
6
Medium
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1
[ [ 3, 2, 1 ], [ 3, 1 ] ]
[ 3 ]
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false
3
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[ 2, 3 ]
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true
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false
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true
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true
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true
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true
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[ [ 7, 5, 2 ] ]
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false
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Medium
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false
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true
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[ 1, 4 ]
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true
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Medium
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[ [ 7, 6, 4 ] ]
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Medium
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[ [ 5, 4, 1 ], [ 5, 1 ] ]
[ 5 ]
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[ [ 2, 1, 4 ] ]
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Medium
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[ [ 4, 5, 7 ] ]
[ 4 ]
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false
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Medium
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false
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false
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Medium
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Medium
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true
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1
[ [ 4, 2, 3, 1 ] ]
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[ 3 ]
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true
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1
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true
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Medium
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[ [ 5, 4, 6, 2 ] ]
[ 5 ]
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true
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1
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[ [ 1, 2, 3 ] ]
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true
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Medium
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5
[ [ 4, 2, 3, 5 ] ]
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false
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false
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Medium
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11
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[ 9, 6 ]
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true
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Medium
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5
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[ 2 ]
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false
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false
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true
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true
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true
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false
5
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2
7
Hard
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1
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true
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Medium
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1
[ [ 3, 1 ], [ 8, 1 ], [ 8, 11, 1 ] ]
[ 8, 3 ]
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false
3
Hard
1
3
Medium
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1
[ [ 2, 3, 1 ], [ 5, 1 ] ]
[ 2, 5 ]
[ 3, 5 ]
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false
3
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1
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Medium
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5
[ [ 9, 2, 5 ], [ 9, 5 ] ]
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false
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2
Medium
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3
[ [ 5, 1, 3 ], [ 5, 3 ] ]
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true
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true
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true
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8
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true
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Medium
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1
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5
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true
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1
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true
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Medium
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1
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false
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Medium
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Medium
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true
5
Hard
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6
Hard
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3
[ [ 2, 1, 3 ], [ 2, 3 ] ]
[ 2 ]
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false
3
Hard
1
2
Medium
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1
[ [ 5, 3, 1 ] ]
[ 5 ]
[ 3 ]
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true
3
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1
Medium
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5
[ [ 8, 3, 5 ] ]
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false
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1
Medium
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9
[ [ 12, 7, 9 ] ]
[ 12 ]
[ 7 ]
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false
3
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2
1
Medium
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2
[ [ 5, 3, 1, 2 ], [ 5, 1, 2 ], [ 5, 3, 2 ], [ 5, 2 ] ]
[ 5 ]
[ 1, 3, 5 ]
9
false
4
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1
4
Medium
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3
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[ 8, 2, 6 ]
[ 1, 2, 4 ]
74
false
5
Hard
1
7
Medium
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4
[ [ 10, 5, 4 ], [ 10, 1, 12, 4 ], [ 10, 5, 12, 4 ], [ 10, 12, 4 ] ]
[ 10 ]
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81
false
4
Hard
2
4
Hard
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6
[ [ 5, 3, 6 ] ]
[ 5 ]
[ 3 ]
17
false
3
Hard
2
1
Medium
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3
[ [ 1, 5, 3 ], [ 6, 5, 3 ], [ 6, 3 ] ]
[ 1, 6 ]
[ 5, 6 ]
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false
3
Hard
1
3
Medium
9,138
5
[ [ 4, 1, 5 ], [ 4, 5 ] ]
[ 4 ]
[ 1, 4 ]
63
false
3
Hard
1
2
Medium
7,151
4
[ [ 2, 4 ], [ 2, 3, 4 ] ]
[ 2 ]
[ 2, 3 ]
39
true
3
Hard
1
2
Medium
10,394
6
[ [ 3, 2, 6 ] ]
[ 3 ]
[ 2 ]
41
false
3
Hard
2
1
Medium
15,499
10
[ [ 8, 5, 10 ] ]
[ 8 ]
[ 5 ]
81
false
3
Hard
2
1
Medium
16,125
8
[ [ 4, 8 ], [ 4, 5, 8 ] ]
[ 4 ]
[ 4, 5 ]
7
false
3
Hard
1
2
Medium
9,380
3
[ [ 2, 1, 3 ], [ 2, 3 ] ]
[ 2 ]
[ 1, 2 ]
25
false
3
Hard
1
2
Medium
14,610
5
[ [ 12, 3, 5 ] ]
[ 12 ]
[ 3 ]
60
false
3
Hard
2
1
Medium
1,312
7
[ [ 4, 1, 7 ] ]
[ 4 ]
[ 1 ]
40
false
3
Hard
2
1
Medium
17,326
2
[ [ 1, 3, 2 ] ]
[ 1 ]
[ 1, 3 ]
39
false
3
Hard
2
1
Medium
1,814
8
[ [ 1, 3, 8 ] ]
[ 1 ]
[ 3 ]
19
true
3
Hard
2
1
Medium
14,369
5
[ [ 3, 1, 5 ], [ 3, 5 ] ]
[ 3 ]
[ 1, 3 ]
24
true
3
Hard
1
2
Medium
5,193
3
[ [ 5, 2, 3 ], [ 5, 3 ] ]
[ 5 ]
[ 2, 5 ]
34
true
3
Hard
1
2
Medium
14,082
1
[ [ 3, 2, 1 ], [ 3, 1 ] ]
[ 3 ]
[ 2, 3 ]
28
true
3
Hard
1
2
Medium
2,004
2
[ [ 1, 11, 2 ], [ 6, 11, 2 ], [ 6, 10, 11, 2 ] ]
[ 1, 5, 6 ]
[ 11 ]
69
true
4
Hard
2
3
Hard
16,108
7
[ [ 2, 6, 7 ] ]
[ 2, 3 ]
[ 6 ]
39
true
3
Hard
2
1
Medium
16,915
8
[ [ 2, 8 ], [ 2, 3, 8 ], [ 2, 5, 8 ] ]
[ 2 ]
[ 2, 3, 5 ]
27
false
3
Hard
1
3
Medium
16,485
11
[ [ 1, 7, 13, 6, 11 ], [ 9, 11 ] ]
[ 1, 9 ]
[ 9, 6 ]
44
false
5
Hard
1
2
Medium
9,136
6
[ [ 4, 1, 6 ], [ 4, 1, 5, 6 ] ]
[ 4 ]
[ 1, 5 ]
45
false
4
Hard
2
2
Medium
969
1
[ [ 3, 2, 1 ] ]
[ 3 ]
[ 2 ]
2
false
3
Hard
2
1
Medium
3,654
1
[ [ 5, 4, 1 ], [ 5, 1 ] ]
[ 5 ]
[ 4, 5 ]
18
false
3
Hard
1
2
Medium
15,459
3
[ [ 7, 6, 3 ] ]
[ 7 ]
[ 6 ]
14
false
3
Hard
2
1
Medium
12,297
4
[ [ 10, 5, 12, 4 ], [ 10, 12, 4 ] ]
[ 10 ]
[ 12 ]
81
false
4
Hard
2
2
Medium
End of preview.

VOCC-Grasp — UnoBench synthetic evaluation split

The synthetic data needed to run VOCC-Grasp on UnoBench. This is not the full UnoBench release (208 GB); it is the test_GT_small_1800 evaluation split — 1800 cases over 1400 images, with RGB, depth and instance annotations for every one of them. No file is missing.

Contents

file size contents
images.tar.gz ~0.9 GB 1400 × image_%06d.png, 1200×1200 RGB
depth.tar.gz ~1.4 GB 1400 × image_%06d.npy, float32 1200×1200
annotations.tar.gz ~15 MB 1400 × image_%06d.npy, float32 instance-id map
meta/gt_for_nlp.json 3 MB case list the pipeline selects from — required
meta/subset_difficulty/ 11 MB every evaluation and calibration split

Depth is in centimetres, and UnoBench ships no camera intrinsics — VOCC-Grasp synthesises a pinhole from a 60° vertical FOV. Annotations are integer instance ids stored as float32; 0 is background.

Usage

pip install huggingface_hub
hf download chiencn/vocc_synthetic --repo-type dataset --local-dir unobench_dl

cd /path/to/vocc-grasp
mkdir -p UnoBench/_extracted
for f in images depth annotations; do
    mkdir -p UnoBench/_extracted/$f
    tar -xzf /path/to/unobench_dl/$f.tar.gz -C UnoBench/_extracted/$f
done
cp /path/to/unobench_dl/meta/gt_for_nlp.json UnoBench/

The result is the layout the code expects:

vocc-grasp
└── UnoBench
    ├── gt_for_nlp.json
    ├── subset_difficulty/          (already in the git repo)
    └── _extracted
        ├── images/image_000003.png
        ├── depth/image_000003.npy
        └── annotations/image_000003.npy

Extracted footprint is about 16 GB.

Scope

Only the test_GT_small_1800 split is packaged. The calibration and fusion splits are not: VOCC-Grasp ships its Platt coefficients already fitted and frozen, so nothing needs refitting to reproduce the reported numbers. Those splits are also incomplete upstream — 731 of their images have no depth map.

Reproducing the reported synthetic score needs no images at all; the fused edge scores are in the git repository. This dataset is for regenerating predictions from raw RGB-D.

Licence and attribution

UnoBench derives from MetaGraspNet-V2; this redistribution follows its terms and is for academic use only. Cite the upstream dataset when you use it.

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