sortletters_parallel_121_v21_openpi

STOP — rejected for behavior training. This public revision is preserved only as a reproducible engineering fixture for loader, padding-mask, and training-throughput tests. It is not a valid real-robot policy-training dataset and must not be used to claim sortletters behavior quality or real-robot success rate.

警告：该数据已被行为训练资格门拒绝。 仅允许用于 loader、mask 和训练吞吐工程验证； 不得用于声称有效真机策略训练、字母排序行为质量或真机成功率。

Qualification evidence

Independent recomputation from the 121 meta/retime_source_indices/episode_*.npz files found:

• 65,532 / 66,053 frames (99.211%) use a right-front observation from a different source timestamp than the reference arm timeline.
• 65,533 frames compose left/right arm sources from different timestamps.
• 121 / 121 episodes contain cross-time composition.
• Median left/right source-time delta: 531 frames (17.7 seconds at 30 FPS).
• Maximum source-time delta: 868 frames.
• No jointly re-executed world observation or native success receipt repairs this causal mismatch.

The structured audit has SHA-256 2a60f082001f977b141fd718634e9c4932201c7bd92414411e390c1494a1d9d3 and status rejected_for_behavior_training.

Provenance

• Derived dataset source repo: Shiki42/sortletters_parallel_121
• Source revision: 76fd84d2f254f7acc95d5a5b4caafc00a03207a1
• Initial immutable payload transport commit: 78783c2e34087cb8d099f022f75c877aa7afc363
• Payload: 489 files, 2,026,345,313 bytes

The data files at the initial payload commit remain content-addressed and unchanged. Later commits only add or revise this warning card and do not upgrade behavior-training qualification.

Allowed use

• loader unit tests
• action_is_pad and 12D-to-32D loss-mask tests
• training-runtime and throughput engineering

Prohibited claims

• valid real-robot policy training
• sortletters behavior quality
• real-robot success rate