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Longguang Zhong

5 accepted papers

2025

BlockPruner: Fine-grained Pruning for Large Language Models

ACL 2025finding

With the rapid growth in the size and complexity of large language models (LLMs), the costs associated with their training and inference have escalated significantly. Research indicates that certain layers in LLMs harbor substantial redundancy, and pruning these layers has minimal impact on the over…

2025

Mutual-Taught for Co-adapting Policy and Reward Models

ACL 2025long

During the preference optimization of large language models (LLMs), distribution shifts may arise between newly generated model samples and the data used to train the reward model (RM). This shift reduces the efficacy of the RM, which in turn negatively impacts the performance of the policy model (P…

2025

Weighted-Reward Preference Optimization for Implicit Model Fusion

ICLR 2025poster

While fusing heterogeneous open-source LLMs with varying architectures and sizes can potentially integrate the strengths of different models, existing fusion methods face significant challenges, such as vocabulary alignment and merging distribution matrices. These procedures are not only complex but…