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Ce Li

5 accepted papers

2026

Reward Shaping for Inference-Time Alignment: A Stackelberg Game Perspective

ICML 2026poster

Existing alignment methods directly use the reward model learned from user preference data to optimize an LLM policy, subject to KL regularization with respect to the base policy. This practice is suboptimal for maximizing user's utility because the KL regularization may cause the LLM to inherit the…

Cited by 0SourceScholar
2023

Prompt Makes mask Language Models Better Adversarial Attackers

ICASSP 2023accepted

Generating high-quality synonymous perturbations is a core challenge for textual adversarial tasks. However, candidates generated from the masked language model often contain many words that are antonyms or irrelevant to the original words, which limit the perturbation space and affect the attack’s…

Cited by 0SourceScholar
2022

C-CAM: Causal CAM for Weakly Supervised Semantic Segmentation on Medical Image

CVPR 2022poster

Recently, many excellent weakly supervised semantic segmentation (WSSS) works are proposed based on class activation mapping (CAM). However, there are few works that consider the characteristics of medical images. In this paper, we find that there are mainly two challenges of medical images in WSSS:…

Cited by 118PDFcodeScholar
2016

Cluster-based dictionary learning and locality-constrained sparse reconstruction for trajectory classification

ICASSP 2016accepted

Trajectory classification has been extensively investigated in recent years, however, the problems about automatically modeling unlabeled and incomplete trajectories are far from being solved. In this paper, we propose a Cluster-based Dictionary Learning (CDL) approach that firstly constructs an ini…

Cited by 0SourceScholar