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README.md

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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:
+
+```text
+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.
+
+```bash
+.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.