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Large Language Models (LLMs) have demonstrated remarkable capabilities through pretraining and alignment. However, superior short-context LLMs may underperform in long-context scenarios due to insufficient long-context alignment. This…

计算与语言 · 计算机科学 2025-03-04 Guanzheng Chen , Xin Li , Michael Qizhe Shieh , Lidong Bing

Large Language Models (LLMs) encode vast amounts of parametric knowledge during pre-training. As world knowledge evolves, effective deployment increasingly depends on their ability to faithfully follow externally retrieved context. When…

计算与语言 · 计算机科学 2026-01-13 Nikhil Anand , Shwetha Somasundaram , Anirudh Phukan , Apoorv Saxena , Koyel Mukherjee

Ensuring contextual faithfulness in retrieval-augmented large language models (LLMs) is crucial for building trustworthy information-seeking systems, particularly in long-form question-answering (LFQA) scenarios. In this work, we identify a…

Retrieval-Augmented Generation (RAG) systems require Large Language Models (LLMs) to generate responses that are faithful to the retrieved context. However, faithfulness hallucination remains a critical challenge, as existing methods often…

计算与语言 · 计算机科学 2025-10-07 Xiaqiang Tang , Yi Wang , Keyu Hu , Rui Xu , Chuang Li , Weigao Sun , Jian Li , Sihong Xie

Large language models (LLMs) encode parametric knowledge about world facts and have shown remarkable performance in knowledge-driven NLP tasks. However, their reliance on parametric knowledge may cause them to overlook contextual cues,…

计算与语言 · 计算机科学 2023-10-24 Wenxuan Zhou , Sheng Zhang , Hoifung Poon , Muhao Chen

As Large Language Models (LLMs) become increasingly sophisticated and ubiquitous in natural language processing (NLP) applications, ensuring their robustness, trustworthiness, and alignment with human values has become a critical challenge.…

计算与语言 · 计算机科学 2024-08-09 Wrick Talukdar , Anjanava Biswas

Large Language Models (LLMs) rely on Human Preference Alignment (HPA) to ensure the generation of safe content. Due to the heavy cost associated with fine-tuning, fine-tuning-free methods have emerged, typically modifying LLM decoding with…

计算与语言 · 计算机科学 2024-02-15 Feifan Song , Yuxuan Fan , Xin Zhang , Peiyi Wang , Houfeng Wang

Recently, leveraging pre-trained Large Language Models (LLMs) for time series (TS) tasks has gained increasing attention, which involves activating and enhancing LLMs' capabilities. Many methods aim to activate LLMs' capabilities based on…

机器学习 · 计算机科学 2026-01-08 Yuxiao Hu , Qian Li , Dongxiao Zhang , Jinyue Yan , Yuntian Chen

Large Language Models (LLMs) are often augmented with external contexts, such as those used in retrieval-augmented generation (RAG). However, these contexts can be inaccurate or intentionally misleading, leading to conflicts with the…

计算与语言 · 计算机科学 2025-03-18 Yukun Huang , Sanxing Chen , Hongyi Cai , Bhuwan Dhingra

Retrieval-augmented generation (RAG) improves Large Language Models (LLMs) by incorporating external information into the response generation process. However, how context-faithful LLMs are and what factors influence LLMs' context…

计算与语言 · 计算机科学 2025-07-11 Yuepei Li , Kang Zhou , Qiao Qiao , Bach Nguyen , Qing Wang , Qi Li

Recent developments in Direct Preference Optimization (DPO) allow large language models (LLMs) to function as implicit ranking models by maximizing the margin between preferred and non-preferred responses. In practice, user feedback on such…

In-context learning is fundamental to modern Large Language Models (LLMs); however, prevailing architectures impose a rigid and fixed contextual structure by assigning linear or constant positional indices. Drawing on Cognitive Load Theory…

机器学习 · 计算机科学 2026-03-06 Huayang Li , Tianyu Zhao , Deng Cai , Richard Sproat

Retrieval Augmented Generation (RAG), a paradigm that integrates external contextual information with large language models (LLMs) to enhance factual accuracy and relevance, has emerged as a pivotal area in generative AI. The LLMs used in…

Despite the growing development of long-context large language models (LLMs), data-centric approaches relying on synthetic data have been hindered by issues related to faithfulness, which limit their effectiveness in enhancing model…

计算与语言 · 计算机科学 2025-05-30 Cehao Yang , Xueyuan Lin , Chengjin Xu , Xuhui Jiang , Shengjie Ma , Aofan Liu , Hui Xiong , Jian Guo

This study evaluates Direct Preference Optimization (DPO) and its variants for aligning Large Language Models (LLMs) with human preferences, testing three configurations: (1) with Supervised Fine Tuning (SFT), (2) without SFT, and (3)…

计算与语言 · 计算机科学 2025-02-11 Amir Saeidi , Shivanshu Verma , Md Nayem Uddin , Chitta Baral

Advancements in large language models (LLMs) have demonstrated remarkable capabilities across a diverse range of applications. These models excel in generating text completions that are contextually coherent and cover an extensive array of…

计算与语言 · 计算机科学 2024-01-22 Bradley Butcher

Large Language Models (LLMs) have become pivotal in advancing natural language processing, yet their potential to perpetuate biases poses significant concerns. This paper introduces a new framework employing Direct Preference Optimization…

计算与语言 · 计算机科学 2024-07-22 Ahmed Allam

Large Language Models (LLMs) have demonstrated impressive capabilities in code completion tasks, where they assist developers by predicting and generating new code in real-time. However, existing LLM-based code completion systems primarily…

软件工程 · 计算机科学 2024-12-12 Zhanming Guan , Junlin Liu , Jierui Liu , Chao Peng , Dexin Liu , Ningyuan Sun , Bo Jiang , Wenchao Li , Jie Liu , Hang Zhu

Large language models (LLMs) augmented with retrieval systems have demonstrated significant potential in handling knowledge-intensive tasks. However, these models often struggle with unfaithfulness issues, generating outputs that either…

计算与语言 · 计算机科学 2025-07-09 Qinggang Zhang , Zhishang Xiang , Yilin Xiao , Le Wang , Junhui Li , Xinrun Wang , Jinsong Su

The widespread application of large language models (LLMs) raises increasing demands on ensuring safety or imposing constraints, such as reducing harmful content and adhering to predefined rules. While there have been several works studying…

机器学习 · 计算机科学 2026-02-13 Yihan Du , Seo Taek Kong , R. Srikant
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