Materialized stratified sample of 10K docs per bin (5.68M total docs, 10.5B tokens). Seed 42. This is the basis for the SOC-156 TrackStar gradient index.
This dataset was renamed on 2026-05-25 as part of the HCAI-Lab HF naming convention cleanup (PR 3). See docs/HCAI_LAB_NAMING_CONVENTION.md in the project repo for the convention.
