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20242026
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cs.LG2026

Reward Hacking in the Era of Large Models: Mechanisms, Emergent Misalignment, Challenges

Xiaohua Wang, Muzhao Tian, Yuqi Zeng +20

Reinforcement Learning from Human Feedback (RLHF) and related alignment paradigms have become central to steering large language models (LLMs) and multimodal large language models…

cs.LG2026

BatCoder: Self-Supervised Bidirectional Code-Documentation Learning via Back-Translation

Jingwen Xu, Yiyang Lu, Zisu Huang +9

Training LLMs for code-related tasks typically depends on high-quality code-documentation pairs, which are costly to curate and often scarce for niche programming languages. We int…

cs.LG2025

Enhancing Model Privacy in Federated Learning with Random Masking and Quantization

Zhibo Xu, Jianhao Zhu, Jingwen Xu +7

The primary goal of traditional federated learning is to protect data privacy by enabling distributed edge devices to collaboratively train a shared global model while keeping raw…

cs.LG2024

Promoting Data and Model Privacy in Federated Learning through Quantized LoRA

JianHao Zhu, Changze Lv, Xiaohua Wang +7

Conventional federated learning primarily aims to secure the privacy of data distributed across multiple edge devices, with the global model dispatched to edge devices for paramete…

cs.LG2024

Advancing Parameter Efficiency in Fine-tuning via Representation Editing

Muling Wu, Wenhao Liu, Xiaohua Wang +7

Parameter Efficient Fine-Tuning (PEFT) techniques have drawn significant attention due to their ability to yield competitive results while updating only a small portion of the adju…