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20242026
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cs.LG2026

SALAAD: Sparse And Low-Rank Adaptation via ADMM for Large Language Model Inference

Hao Ma, Melis Ilayda Bal, Liang Zhang +4

Modern large language models are increasingly deployed under compute and memory constraints, making flexible control of model capacity a central challenge. While sparse and low-ran…

cs.LG2025

Beyond Reward Hacking: Causal Rewards for Large Language Model Alignment

Chaoqi Wang, Zhuokai Zhao, Yibo Jiang +8

Recent advances in large language models (LLMs) have demonstrated significant progress in performing complex tasks. While Reinforcement Learning from Human Feedback (RLHF) has been…

cs.LG2025

Preference Optimization with Multi-Sample Comparisons

Chaoqi Wang, Zhuokai Zhao, Chen Zhu +8

Recent advancements in generative models, particularly large language models (LLMs) and diffusion models, have been driven by extensive pretraining on large datasets followed by po…

cs.LG2025

Step-KTO: Optimizing Mathematical Reasoning through Stepwise Binary Feedback

Yen-Ting Lin, Di Jin, Tengyu Xu +11

Large language models (LLMs) have recently demonstrated remarkable success in mathematical reasoning. Despite progress in methods like chain-of-thought prompting and self-consisten…

cs.LG2024

The Perfect Blend: Redefining RLHF with Mixture of Judges

Tengyu Xu, Eryk Helenowski, Karthik Abinav Sankararaman +17

Reinforcement learning from human feedback (RLHF) has become the leading approach for fine-tuning large language models (LLM). However, RLHF has limitations in multi-task learning…