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The dataset viewer is not available for this split.
Cannot load the dataset split (in streaming mode) to extract the first rows.
Error code:   StreamingRowsError
Exception:    ValueError
Message:      Expected object or value
Traceback:    Traceback (most recent call last):
                File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 290, in _generate_tables
                  pa_table = paj.read_json(
                      io.BytesIO(batch), read_options=paj.ReadOptions(block_size=block_size)
                  )
                File "pyarrow/_json.pyx", line 342, in pyarrow._json.read_json
                File "pyarrow/error.pxi", line 155, in pyarrow.lib.pyarrow_internal_check_status
                File "pyarrow/error.pxi", line 92, in pyarrow.lib.check_status
                  raise convert_status(status)
              pyarrow.lib.ArrowInvalid: JSON parse error: Column() changed from object to string in row 0
              
              During handling of the above exception, another exception occurred:
              
              Traceback (most recent call last):
                File "/src/services/worker/src/worker/utils.py", line 147, in get_rows_or_raise
                  return get_rows(
                      dataset=dataset,
                  ...<4 lines>...
                      column_names=column_names,
                  )
                File "/src/libs/libcommon/src/libcommon/utils.py", line 272, in decorator
                  return func(*args, **kwargs)
                File "/src/services/worker/src/worker/utils.py", line 127, in get_rows
                  rows_plus_one = list(itertools.islice(safe_iter(ds, dataset=dataset), rows_max_number + 1))
                File "/src/services/worker/src/worker/utils.py", line 483, in safe_iter
                  yield from ds.decode(False) if ds.features else ds
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2840, in __iter__
                  for key, example in ex_iterable:
                                      ^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2373, in __iter__
                  for key, pa_table in self._iter_arrow():
                                       ~~~~~~~~~~~~~~~~^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2398, in _iter_arrow
                  for key, pa_table in self.ex_iterable._iter_arrow():
                                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 536, in _iter_arrow
                  for key, pa_table in iterator:
                                       ^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 419, in _iter_arrow
                  for key, pa_table in self.generate_tables_fn(**gen_kwags):
                                       ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 304, in _generate_tables
                  batch = json_encode_fields_in_json_lines(original_batch, json_field_paths)
                File "/usr/local/lib/python3.14/site-packages/datasets/utils/json.py", line 111, in json_encode_fields_in_json_lines
                  examples = [ujson_loads(line) for line in original_batch.splitlines()]
                              ~~~~~~~~~~~^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/utils/json.py", line 20, in ujson_loads
                  return pd.io.json.ujson_loads(*args, **kwargs)
                         ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
              ValueError: Expected object or value

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S1 + MLLM4D-20% training transfer bundle

This repository contains data and pretrained weights only; it does not contain training code.

Frozen training inputs

  • S1: llava_hound_64k,spar_234k, 298,027 rows.
  • MLLM4D: mllm4d_2m%20, Python RNG seed 0, 399,999 sampled rows, 50,030 unique videos.
  • Base model: Qwen/Qwen3-VL-8B-Instruct, revision 0c351dd01ed87e9c1b53cbc748cba10e6187ff3b.
  • Geometry encoder: edgarsucar/vdpm, revision f38b3d8cb26543eda8954c865492f3a90bb3c7e5, file model.pt.

The exact MLLM4D-20% training population has membership SHA-256 7cbe158fe234a876400b240392ed8c2b0e7e67bbf8817c627adf51621295056a and post-shuffle order SHA-256 8d265636d75497c2c233676f7f47585315aca74769da649c14c8bb4b9ef3c654.

Restore

All payload archives are independently extractable except s1_spar_234k_media_03.tar, which is transported as four byte-exact parts to avoid a large-file metadata timeout. Reassemble and verify it first:

cat s1_spar_234k_media_03.tar.part{00..03} > s1_spar_234k_media_03.tar
sha256sum -c s1_spar_234k_media_03.original.sha256

Then, from the intended project root:

sha256sum -c MANIFEST.sha256
for archive in /path/to/download/*.tar; do
  tar -xf "$archive"
done

Extraction reconstructs the expected ckpts/ and data/ paths. In particular, the LLaVA-Hound media archive materializes the legacy paths required by the original S1 annotation under data/media/llava_hound/frames/.

annotations_s1_mllm4d20.tar contains the original full MLLM4D annotation so that mllm4d_2m%20 can reproduce the frozen selection. mllm4d20_seed0_selection_receipts.tar additionally contains the exact pre-shuffle and post-shuffle 399,999-row populations and audit inventories.

Upstream attribution

  • Qwen3-VL-8B-Instruct: Qwen team, Apache-2.0.
  • VDPM: Edgar Sucar et al., CC-BY-NC-4.0 upstream.
  • SPAR-7M-RGBD: Fudan ZVG SPAR project.
  • LLaVA-Hound media: ShareGPTVideo/LLaVA-Hound source material.
  • MLLM-4D: GVCLab MLLM-4D project.

See MANIFEST.sha256 and BUNDLE_RECEIPT.json for exact archive hashes, sizes, populations, and source revisions.

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