metadata/reconstruction.md

SFT-Eval Split Reconstruction

Relevant Assets

• QA rows for eval split and sft split in splits/
• Split manifests and split counts in splits/

How to Tnteprete the QA Rows

Each row exposes three reconstruction-oriented fields:

• visual_ref
• source_episode_ref
• reconstruction_key_json

These are designed to be stable, path-free references. They are sufficient to map a released item back to the corresponding source episode or recording once you have obtained the upstream dataset under its original terms.

Source-specific Units

• GM-100: grouped by (task_id, episode_id).
• RH20T: grouped by recording_id.
• REASSEMBLE: grouped by recording_id.
• AIST-Bimanual: grouped by recording_id.

Expected Workflow

1. Obtain upstream datasets under their original terms.
2. Use source, source_task_id, source_unit_id, camera, and frame_indices_json from the public release.
3. Reconstruct the required visual inputs with the source-specific evaluation scripts in the main codebase.

Optional: QA Rows Field Schema

• item_id: Stable public item identifier.
• split: eval or sft.
• source: GM-100, RH20T, REASSEMBLE, or AIST-Bimanual.
• source_slug: Short source slug used in release-relative references.
• source_task_id: Source-side task identifier without local paths.
• source_unit_type: Split-isolation unit type, e.g. episode or recording.
• source_unit_id: Public unit identifier without local paths.
• task_id: Canonical paper task ID T1 ... T12.
• task_name: Canonical paper task name.
• task_type_legacy: Legacy engineering task name when it differs from paper naming.
• input_type: Public input format description.
• question: Public question text.
• choice_A ... choice_F: Flattened answer choices.
• answer: Public answer label in the release schema.
• answer_text: Public answer text mapped from answer.
• num_choices: Number of non-null answer choices.
• num_frames: Number of referenced frames.
• frame_indices_json: JSON-encoded frame indices.
• display_labels_json: JSON-encoded panel labels such as ["X", "Y"] or ["X", "Z", "Y"].
• camera: Source camera identifier when available.
• arm_type: Source-side arm configuration tag when available.
• visual_ref: Release-relative visual reference string. This is not a local filesystem path.
• source_episode_ref: Release-relative source unit reference.
• reconstruction_key_json: Minimal JSON payload needed to reconstruct the sample with upstream data and source-specific scripts.
• task_meta_in_source: Whether source-side task metadata/context exists upstream.
• task_meta_public: Always false in this release build. Separate structured task-meta fields are intentionally withheld.
• split_version: Current split version.
• split_group_id: Source-side split group identifier.
• builder_version: Public builder version tag.
• prompt_version: Public prompt-serialization version tag.
• sft_target: SFT-only supervised target string. Present only in processdata_sft.*.

Notes

• T5 is equivalent to T_progress.
• T8 is equivalent to T_temporal.
• T9 is equivalent to T_binary.
• T8 is normalized into six explicit permutation choices so the public table remains flat and Parquet-friendly.
• T9 is normalized to A/B choices even when the source data originally used X/Y.