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Large Language Models (LLMs) often encode whether a statement is true as a vector in their residual stream activations. These vectors, also known as truth vectors, have been studied in prior work, however how they change when context is…

计算与语言 · 计算机科学 2026-01-13 Shivam Adarsh , Maria Maistro , Christina Lioma

This survey provides an in-depth analysis of knowledge conflicts for large language models (LLMs), highlighting the complex challenges they encounter when blending contextual and parametric knowledge. Our focus is on three categories of…

计算与语言 · 计算机科学 2024-06-25 Rongwu Xu , Zehan Qi , Zhijiang Guo , Cunxiang Wang , Hongru Wang , Yue Zhang , Wei Xu

Context, as referred to situational factors related to the object of interest, can help infer the object's states or properties in visual recognition. As such contextual features are too diverse (across instances) to be annotated, existing…

计算机视觉与模式识别 · 计算机科学 2021-10-11 Mingzhou Liu , Xinwei Sun , Fandong Zhang , Yizhou Yu , Yizhou Wang

Large Language Models (LLMs) have demonstrated remarkable capabilities in various tasks, yet they often struggle with context-faithfulness generations that properly reflect contextual knowledge. While existing approaches focus on enhancing…

计算与语言 · 计算机科学 2025-04-23 Xiaowei Yuan , Zhao Yang , Ziyang Huang , Yequan Wang , Siqi Fan , Yiming Ju , Jun Zhao , Kang Liu

It has been widely understood that differential privacy (DP) can guarantee rigorous privacy against adversaries with arbitrary prior knowledge. However, recent studies demonstrate that this may not be true for correlated data, and indicate…

机器学习 · 计算机科学 2019-06-07 Yanan Li , Xuebin Ren , Shusen Yang , Xinyu Yang

Confidence estimation is crucial for reflecting the reliability of large language models (LLMs), particularly in the widely used closed-source models. Utilizing data augmentation for confidence estimation is viable, but discussions focus on…

机器学习 · 计算机科学 2025-06-16 Rui Wang , Renyu Zhu , Minmin Lin , Runze Wu , Tangjie Lv , Changjie Fan , Haobo Wang

Privacy issues arise prominently during the inappropriate transmission of information between entities. Existing research primarily studies privacy by exploring various privacy attacks, defenses, and evaluations within narrowly predefined…

计算与语言 · 计算机科学 2024-10-07 Wei Fan , Haoran Li , Zheye Deng , Weiqi Wang , Yangqiu Song

Beliefs shape how people reason, communicate, and behave. Rather than existing in isolation, they exhibit a rich correlational structure--some connected through logical dependencies, others through indirect associations or social processes.…

计算与语言 · 计算机科学 2026-02-02 Joseph Malone , Rachith Aiyappa , Byunghwee Lee , Haewoon Kwak , Jisun An , Yong-Yeol Ahn

Despite their exceptional capabilities, large language models (LLMs) are prone to generating unintended text due to false or outdated knowledge. Given the resource-intensive nature of retraining LLMs, there has been a notable increase in…

计算与语言 · 计算机科学 2024-05-28 Jun-Yu Ma , Zhen-Hua Ling , Ningyu Zhang , Jia-Chen Gu

Despite demonstrating impressive capabilities, Large Language Models (LLMs) still often struggle to accurately express the factual knowledge they possess, especially in cases where the LLMs' knowledge boundaries are ambiguous. To improve…

计算与语言 · 计算机科学 2025-05-26 Boyang Xue , Fei Mi , Qi Zhu , Hongru Wang , Rui Wang , Sheng Wang , Erxin Yu , Xuming Hu , Kam-Fai Wong

Pre-trained language models (PLMs) have demonstrated significant proficiency in solving a wide range of general natural language processing (NLP) tasks. Researchers have observed a direct correlation between the performance of these models…

计算与语言 · 计算机科学 2024-04-12 Kennedy Edemacu , Xintao Wu

Large vision-language models (VLMs) can jointly interpret images and text, but they are also prone to absorbing and reproducing harmful social stereotypes when visual cues such as age, gender, race, clothing, or occupation are present. To…

计算机视觉与模式识别 · 计算机科学 2025-11-25 Aravind Narayanan , Vahid Reza Khazaie , Shaina Raza

Large language models (LLMs) often need to balance their internal parametric knowledge with external information, such as user beliefs and content from retrieved documents, in real-world scenarios like RAG or chat-based systems. A model's…

计算与语言 · 计算机科学 2026-04-27 Shuowei Li , Haoxin Li , Wenda Chu , Yi Fang

Large scale adoption of large language models has introduced a new era of convenient knowledge transfer for a slew of natural language processing tasks. However, these models also run the risk of undermining user trust by exposing unwanted…

计算与语言 · 计算机科学 2022-04-21 Richard Plant , Valerio Giuffrida , Dimitra Gkatzia

Retrieval-augmented generation (RAG) mitigates many problems of fully parametric language models, such as temporal degradation, hallucinations, and lack of grounding. In RAG, the model's knowledge can be updated from documents provided in…

机器学习 · 计算机科学 2024-10-10 Evgenii Kortukov , Alexander Rubinstein , Elisa Nguyen , Seong Joon Oh

Information retrieval in Large Language Models (LLMs) is increasingly recognized as intertwined with generation capabilities rather than mere lookup. While longer contexts are often assumed to improve retrieval, the effects of intra-context…

计算与语言 · 计算机科学 2025-08-01 Chupei Wang , Jiaqiu Vince Sun

Large language models (LLMs) acquire knowledge across diverse domains such as science, history, and geography encountered during generative pre-training. However, due to their stochasticity, it is difficult to predict what LLMs have…

计算与语言 · 计算机科学 2026-01-27 Kartik Sharma , Yiqiao Jin , Rakshit Trivedi , Srijan Kumar

Recent work in neural machine translation has demonstrated both the necessity and feasibility of using inter-sentential context -- context from sentences other than those currently being translated. However, while many current methods…

计算与语言 · 计算机科学 2021-06-03 Patrick Fernandes , Kayo Yin , Graham Neubig , André F. T. Martins

The open-source publishing of large language models (LLMs) has created many possibilities for how anyone who understands language and has access to a computer can interact with significant tools of artificial intelligence, particularly in…

计算与语言 · 计算机科学 2023-12-14 Shane Storm Strachan

While Large Language Models (LLMs) have shown significant advancements in performance, various jailbreak attacks have posed growing safety and ethical risks. Malicious users often exploit adversarial context to deceive LLMs, prompting them…

密码学与安全 · 计算机科学 2025-08-15 Jinhwa Kim , Ian G. Harris