Authors

Hao Liu

Publications 8

Preprint Open access

GroundSight at GroundLM 2026 Shared Tasks: GoldenViewVQA

Kun Wang, Yupeng Hu, Ruping Cao et al. · 2026

GoldenViewVQA requires models to jointly answer driving-scene questions and identify the camera view containing the supporting visual evidence, making precise evidence localization as important as answer correctness. We present \textbf{CoVeR-VQA}, a training-free multi-stage verification and correction framework for gr …

Preprint Open access

On the Off-Policy Teacher in On-Policy Distillation

On-policy distillation (OPD) has recently emerged as a promising post-training paradigm in which the student learns from trajectories generated by its own policy under dense teacher supervision. However, OPD introduces a fundamental asymmetry: although the sampled trajectories are on-policy for the student, they are of …

Co-authors