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Large Language Models (LLMs) perform well in short contexts but degrade on long legal documents, often producing hallucinations such as incorrect clauses or precedents. In the legal domain, where precision is critical, such errors undermine…

计算与语言 · 计算机科学 2026-03-23 Suyash Maniyar , Deepali Singh , Rohith Reddy

Large language models (LLMs) have made remarkable progress in generating fluent text, but they still face a critical challenge of contextual misalignment in long-term and dynamic dialogue. When human users omit premises, simplify…

人工智能 · 计算机科学 2026-03-18 Ding Wei

Aligning large language models (LLMs) with human values is essential for their safe deployment and widespread adoption. Current LLM safety benchmarks often focus solely on the refusal of individual problematic queries, which overlooks the…

计算与语言 · 计算机科学 2025-02-10 Guangzhi Sun , Xiao Zhan , Shutong Feng , Philip C. Woodland , Jose Such

Most existing large language models (LLMs) are expensive to adapt after deployment, especially when a task requires newly produced information or niche domain knowledge. Recent work has shown that, by manipulating and optimizing their…

计算与语言 · 计算机科学 2026-05-15 Zeyu Huang , Adhiguna Kuncoro , Qixuan Feng , Jiajun Shen , Lucio Dery , Arthur Szlam , Marc'Aurelio Ranzato

In this paper, we introduce \emph{refined Direct Preference Optimization} (rDPO), a method for improving the behavioral alignment of Large Language Models (LLMs) without the need for human-annotated data. The method involves creating…

计算与语言 · 计算机科学 2024-02-14 Víctor Gallego

Processing long contexts remains a challenge for large language models (LLMs) due to the quadratic computational and memory overhead of the self-attention mechanism and the substantial KV cache sizes during generation. We propose LLoCO, a…

计算与语言 · 计算机科学 2024-10-18 Sijun Tan , Xiuyu Li , Shishir Patil , Ziyang Wu , Tianjun Zhang , Kurt Keutzer , Joseph E. Gonzalez , Raluca Ada Popa

On-the-fly retrieval of relevant knowledge has proven an essential element of reliable systems for tasks such as open-domain question answering and fact verification. However, because retrieval systems are not perfect, generation models are…

计算与语言 · 计算机科学 2023-11-15 Zhiruo Wang , Jun Araki , Zhengbao Jiang , Md Rizwan Parvez , Graham Neubig

AI alignment in the shape of Reinforcement Learning from Human Feedback (RLHF) is increasingly treated as a crucial ingredient for high performance large language models. Proximal Policy Optimization (PPO) has been positioned by recent…

Large Language Models (LLMs) often generate inaccurate responses (hallucinations) when faced with questions beyond their knowledge scope. Retrieval-Augmented Generation (RAG) addresses this by leveraging external knowledge, but a critical…

信息检索 · 计算机科学 2025-09-10 Haoxiang Jin , Ronghan Li , Zixiang Lu , Qiguang Miao

In the continuously advancing AI landscape, crafting context-rich and meaningful responses via Large Language Models (LLMs) is essential. Researchers are becoming more aware of the challenges that LLMs with fewer parameters encounter when…

计算与语言 · 计算机科学 2024-10-17 Somnath Banerjee , Amruit Sahoo , Sayan Layek , Avik Dutta , Rima Hazra , Animesh Mukherjee

Extending large language models to effectively handle long contexts requires instruction fine-tuning on input sequences of similar length. To address this, we present LongAlign -- a recipe of the instruction data, training, and evaluation…

计算与语言 · 计算机科学 2024-02-01 Yushi Bai , Xin Lv , Jiajie Zhang , Yuze He , Ji Qi , Lei Hou , Jie Tang , Yuxiao Dong , Juanzi Li

Recent advancements in text-to-speech (TTS) have shown that language model (LM)-based systems offer competitive performance to their counterparts. Further optimization can be achieved through preference alignment algorithms, which adjust…

计算与语言 · 计算机科学 2024-09-20 Jinchuan Tian , Chunlei Zhang , Jiatong Shi , Hao Zhang , Jianwei Yu , Shinji Watanabe , Dong Yu

Large language models (LLMs) have shown success in generating high-quality responses. In order to achieve better alignment with LLMs with human preference, various works are proposed based on specific optimization process, which, however,…

计算与语言 · 计算机科学 2024-09-04 Zhuo Li , Yuhao Du , Jinpeng Hu , Xiang Wan , Anningzhe Gao

The performance of Large Language Models (LLMs) is fundamentally determined by the contextual information provided during inference. This survey introduces Context Engineering, a formal discipline that transcends simple prompt design to…

Aligning large language models (LLMs) with human values and safety constraints is challenging, especially when objectives like helpfulness, truthfulness, and avoidance of harm conflict. Reinforcement Learning from Human Feedback (RLHF) has…

计算与语言 · 计算机科学 2025-03-31 Xuying Li , Zhuo Li , Yuji Kosuga , Victor Bian

Recent advances have been improving the context windows of Large Language Models (LLMs). To quantify the real long-context capabilities of LLMs, evaluators such as the popular Needle in a Haystack have been developed to test LLMs over a…

软件工程 · 计算机科学 2024-06-11 Jiawei Liu , Jia Le Tian , Vijay Daita , Yuxiang Wei , Yifeng Ding , Yuhan Katherine Wang , Jun Yang , Lingming Zhang

Embedding models play a pivot role in modern NLP applications such as IR and RAG. While the context limit of LLMs has been pushed beyond 1 million tokens, embedding models are still confined to a narrow context window not exceeding 8k…

计算与语言 · 计算机科学 2024-11-08 Dawei Zhu , Liang Wang , Nan Yang , Yifan Song , Wenhao Wu , Furu Wei , Sujian Li

We introduce a low-resource safety enhancement method for aligning large language models (LLMs) without the need for supervised fine-tuning (SFT) or reinforcement learning from human feedback (RLHF). Our main idea is to exploit knowledge…

计算与语言 · 计算机科学 2024-06-07 Haozheng Luo , Jiahao Yu , Wenxin Zhang , Jialong Li , Jerry Yao-Chieh Hu , Xinyu Xing , Han Liu

Large Language Models (LLMs) struggle with accuracy, domain-specific reasoning, and interpretability in vertical domains. Traditional preference alignment methods like Reinforcement Learning from Human Feedback (RLHF) and Direct Preference…

计算与语言 · 计算机科学 2025-06-04 Qihang Yan , Xinyu Zhang , Luming Guo , Qi Zhang , Feifan Liu

What enables large language models (LLMs) to effectively model user preferences in sequential recommendation? Our investigation reveals that existing preference-alignment approaches largely rely on binary pairwise comparisons, overlooking…

信息检索 · 计算机科学 2026-04-20 Zhongyu Ouyang , Qianlong Wen , Chunhui Zhang , Yanfang Ye , Soroush Vosoughi