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The emergence of Large Language Models (LLMs) has fundamentally transformed natural language processing, making them indispensable across domains ranging from conversational systems to scientific exploration. However, their pre-trained…

Large visual language models (LVLMs) have demonstrated excellent instruction-following capabilities, yet remain vulnerable to stealthy backdoor attacks when finetuned using contaminated data. Existing backdoor defense techniques are usually…

Cryptography and Security · Computer Science 2025-06-09 Yuan Xun , Siyuan Liang , Xiaojun Jia , Xinwei Liu , Xiaochun Cao

Post-training alignment has increasingly become a crucial factor in enhancing the usability of language models (LMs). However, the strength of alignment varies depending on individual preferences. This paper proposes a method to incorporate…

Computation and Language · Computer Science 2026-01-13 Wenhong Zhu , Weinan Zhang , Rui Wang

Reinforcement fine-tuning (RFT) has become a core paradigm for post-training large language models, yet its training process remains highly fragile. Existing efforts mainly improve reliability at the system level or address specific issues…

Software Engineering · Computer Science 2026-05-07 Lingzhe Zhang , Tong Jia , Yunpeng Zhai , Liancheng Fang , Kening Zheng , Hongyi Liu , Xiaosong Huang , Philip S. Yu , Ying Li

Reinforcement learning (RL)-based fine-tuning has become a crucial step in post-training language models for advanced mathematical reasoning and coding. Following the success of frontier reasoning models, recent work has demonstrated that…

Machine Learning · Computer Science 2025-08-11 Rosie Zhao , Alexandru Meterez , Sham Kakade , Cengiz Pehlevan , Samy Jelassi , Eran Malach

Increasing test-time computation has emerged as a promising direction for improving language model performance, particularly in scenarios where model finetuning is impractical or impossible due to computational constraints or private model…

Computation and Language · Computer Science 2025-12-22 Gonçalo Faria , Noah A. Smith

Language models trained on large-scale corpus often generate content that is harmful, toxic, or contrary to human preferences, making their alignment with human values a critical concern. Reinforcement learning from human feedback (RLHF)…

Computation and Language · Computer Science 2023-10-26 Jixiang Hong , Quan Tu , Changyu Chen , Xing Gao , Ji Zhang , Rui Yan

Reinforcement Learning from Human Feedback (RLHF) is the standard for aligning Large Language Models (LLMs), yet recent progress has moved beyond canonical text-based methods. This survey synthesizes the new frontier of alignment research…

Machine Learning · Computer Science 2025-11-07 Raghav Sharma , Manan Mehta , Sai Tiger Raina

Effective tool use is essential for large language models (LLMs) to interact with their environment. However, progress is limited by the lack of efficient reinforcement learning (RL) frameworks specifically designed for tool use, due to…

Computation and Language · Computer Science 2026-04-16 Junjie Ye , Changhao Jiang , Zhengyin Du , Yufei Xu , Xuesong Yao , Zhiheng Xi , Xiaoran Fan , Qi Zhang , Tao Gui , Xuanjing Huang , Jiecao Chen

Large language models demonstrate reasonable multilingual abilities, despite predominantly English-centric pretraining. However, the spontaneous multilingual alignment in these models is shown to be weak, leading to unsatisfactory…

Computation and Language · Computer Science 2024-11-19 Jiahuan Li , Shujian Huang , Aarron Ching , Xinyu Dai , Jiajun Chen

Alignment, endowing a pre-trained Large language model (LLM) with the ability to follow instructions, is crucial for its real-world applications. Conventional supervised fine-tuning (SFT) methods formalize it as causal language modeling…

Computation and Language · Computer Science 2024-12-18 Yuchen Fan , Yuzhong Hong , Qiushi Wang , Junwei Bao , Hongfei Jiang , Yang Song

Pre-trained Large Language Models (LLMs) have significantly advanced natural language processing capabilities but are susceptible to biases present in their training data, leading to unfair outcomes in various applications. While numerous…

Computation and Language · Computer Science 2024-03-04 Sana Ebrahimi , Kaiwen Chen , Abolfazl Asudeh , Gautam Das , Nick Koudas

Reinforcement Learning (RL) algorithms often require long training to become useful, especially in complex environments with sparse rewards. While techniques like reward shaping and curriculum learning exist to accelerate training, these…

Machine Learning · Computer Science 2025-09-11 Lukas Toral , Teddy Lazebnik

This paper investigates supervised fine-tuning of large language models (LLMs) to improve their pedagogical alignment in computing education, addressing concerns that LLMs may hinder learning outcomes. The project utilised a proprietary…

Computation and Language · Computer Science 2024-11-05 Alexandra Vassar , Jake Renzella , Emily Ross , Andrew Taylor

This article introduces contrastive alignment instructions (AlignInstruct) to address two challenges in machine translation (MT) on large language models (LLMs). One is the expansion of supported languages to previously unseen ones. The…

Computation and Language · Computer Science 2024-07-23 Zhuoyuan Mao , Yen Yu

Word alignment over parallel corpora has a wide variety of applications, including learning translation lexicons, cross-lingual transfer of language processing tools, and automatic evaluation or analysis of translation outputs. The great…

Computation and Language · Computer Science 2021-08-13 Zi-Yi Dou , Graham Neubig

The ability to follow instructions is crucial for Large Language Models (LLMs) to handle various real-world applications. Existing benchmarks primarily focus on evaluating pure response quality, rather than assessing whether the response…

Computation and Language · Computer Science 2024-06-06 Yuxin Jiang , Yufei Wang , Xingshan Zeng , Wanjun Zhong , Liangyou Li , Fei Mi , Lifeng Shang , Xin Jiang , Qun Liu , Wei Wang

Post-training is essential for adapting Large Language Models (LLMs) to real-world applications. Deploying post-trained models faces significant challenges due to substantial memory overhead and noticeable inference latency. Existing work…

Computation and Language · Computer Science 2026-01-23 Yizhe Xiong , Wei Huang , Xin Ye , Hui Chen , Zijia Lin , Haoran Lian , Zhenpeng Su , Jungong Han , Guiguang Ding

Large language models (LLMs) have shown remarkable abilities in diverse natural language processing (NLP) tasks. The LLMs generally undergo supervised fine-tuning (SFT) followed by preference alignment to be usable in downstream…

Computation and Language · Computer Science 2024-06-27 Shiva Kumar Pentyala , Zhichao Wang , Bin Bi , Kiran Ramnath , Xiang-Bo Mao , Regunathan Radhakrishnan , Sitaram Asur , Na , Cheng

Instruction Fine-tuning~(IFT) is a critical phase in building large language models~(LLMs). Previous works mainly focus on the IFT's role in the transfer of behavioral norms and the learning of additional world knowledge. However, the…

Computation and Language · Computer Science 2024-08-13 Mengjie Ren , Boxi Cao , Hongyu Lin , Cao Liu , Xianpei Han , Ke Zeng , Guanglu Wan , Xunliang Cai , Le Sun
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