activity
20232026
most citedUnderstanding Contrastive Learning via Distributionally Robust Optimization

13 citations · 13 across the 5 of their papers we have counts for

collaborators

5 papers

cs.CR2026

FedDetox: Robust Federated SLM Alignment via On-Device Data Sanitization

Shunan Zhu, Jiawei Chen, Yonghao Yu +1

As high quality public data becomes scarce, Federated Learning (FL) provides a vital pathway to leverage valuable private user data while preserving privacy. However, real-world cl…

cs.CE2025

Task-Specific Sparse Feature Masks for Molecular Toxicity Prediction with Chemical Language Models

Kwun Sy Lee, Jiawei Chen, Fuk Sheng Ford Chung +3

Reliable in silico molecular toxicity prediction is a cornerstone of modern drug discovery, offering a scalable alternative to experimental screening. However, the black-box nature…

cs.LG2024

Towards Robust Alignment of Language Models: Distributionally Robustifying Direct Preference Optimization

Junkang Wu, Yuexiang Xie, Zhengyi Yang +6

This study addresses the challenge of noise in training datasets for Direct Preference Optimization (DPO), a method for aligning Large Language Models (LLMs) with human preferences…

cs.LG2023

BSL: Understanding and Improving Softmax Loss for Recommendation

Junkang Wu, Jiawei Chen, Jiancan Wu +3

Loss functions steer the optimization direction of recommendation models and are critical to model performance, but have received relatively little attention in recent recommendati…

cs.LG2023★ 13 cited

Understanding Contrastive Learning via Distributionally Robust Optimization

Junkang Wu, Jiawei Chen, Jiancan Wu +3

This study reveals the inherent tolerance of contrastive learning (CL) towards sampling bias, wherein negative samples may encompass similar semantics (\eg labels). However, existi…