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Ao Xu

3 accepted papers

2026

ProRL: Effective Reinforcement Learning for Proactive Recommendation via Rectified Policy Gradient Estimation

ICML 2026poster

Proactive Recommender Systems (PRSs) aim to guide user preference shift toward target items by generating paths of intermediate recommendations. Reinforcement learning (RL) provides a principled framework for optimizing such sequential decision tasks. Based on path rewards, RL can naturally jointly …

Cited by 0SourceScholar
2025

Noise2Score3D: Tweedie's Approach for Unsupervised Point Cloud Denoising

ICCV 2025poster

Building on recent advances in Bayesian statistics and image denoising, we propose Noise2Score3D, a fully unsupervised framework for point cloud denoising. Noise2Score3D learns the score function of the underlying point cloud distribution directly from noisy data, eliminating the need for clean data…

Cited by 0SourcePDFScholar
2023

Multi-Scale Visual Servoing Framework for Optical Microscopy Based on SIFT Matching

RA-L 2023

This letter introduces an innovative multi-scale visual servoing framework for optical microscopy, engineered to automatically reposition the microscope for high-magnification target view across multiple magnifications, thereby facilitating repetitive and accurate histologic biopsies. The framework

Cited by 7SourceScholar