Hongbin Liu

2 papers indexed

arxivcs.RO2026-07-24

Action-Conditioned World Model for Goal Plane Probe Guidance in Robotic Ultrasound

Siqi Fan, Mingcong Chen, Ran Liu, Zixuan Yang, Xiaoyu Fu, Xiaoqing Gao, et al.

We present an action-conditioned world model framework for goal plane probe guidance in robotic ultrasound, with a focus on neck ultrasound scanning. Autonomous ultrasound tasks often require large numbers of probe-motion trajectories for training, but collecting high-quality dem…

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arxivcs.LGcs.CL2026-07-02

Denser $\neq$ Better: Limits of On-Policy Self-Distillation for Continual Post-Training

Meng Wang, Haohan Zhao, Wenzhuo Liu, Lu Yang, Geng Liu, Haiyang Guo, et al.

Continual post-training enables foundation models to acquire new knowledge while preserving existing capabilities. Recent work suggests that on-policy learning can mitigate forgetting, with on-policy self-distillation emerging as a particularly attractive approach. In this work,…

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