Pier data-quality toolkit
Open, reproducible measurement of robot demonstration data
A command-line toolkit that scans LeRobot-format datasets (SO-100/SO-101 arms and LIBERO) and scores every trajectory on ten quality axes: smoothness, action–state alignment, redundancy, diversity, gripper chatter, frozen or stuck channels, operator handovers and more. It runs offline on a CPU, and its reports are reproducible byte-for-byte.
pier scanpier qualitypier curatepier judge-auditpier screen
Latest
DQ-Bench v0.1: an open robot-data-quality benchmark anyone can reproduce at no cost.
External validation on labelled failure datasets (RoboVAD, BotFails, ArmnetBench): provenance signals separate policy rollouts from human teleoperation at AUC 0.89–0.97.
New curation axes (frozen channels, alignment lag, stuck-vs-command) validated on 43 real datasets; support for LeRobot v2.x datasets.
Operator handovers measured across 3,296 switches on 50 public datasets.
Quality Index v0.2.0: a scored audit of the open SO-10x data commons on a registered sample of 100 datasets.