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ALAM CALVIN NPZ dataset

Repository ID: Mark-ZJTang/CALVIN_task_ABC_D.

Converted CALVIN RGB-static frames used by ALAM tokenizer training. The payload is published as uncompressed data-*.tar shards plus ARCHIVE_MANIFEST.sha256 and DATASET_LAYOUT.json; it is not meant to be read directly from the tar files. The ALAM downloader verifies and reconstructs this runtime layout:

data/alam/calvin/{training,validation}/

Each split contains its npz_metadata.json and referenced NPZ files. Training has 1,795,045 entries, validation has 99,022, and this snapshot has no separate test split.

.venvs/publish/bin/python workflows/publishing/download_huggingface.py \
  --artifact calvin_task_abc_d

Before making this dataset public, the publisher must verify CALVIN source-data redistribution terms and add the appropriate license and upstream attribution.