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Extracting sentence embeddings from large language models (LLMs) is a practical direction, as it requires neither additional data nor fine-tuning. Previous studies usually focus on prompt engineering to guide LLMs to encode the core…

计算与语言 · 计算机科学 2025-05-20 Zifeng Cheng , Zhonghui Wang , Yuchen Fu , Zhiwei Jiang , Yafeng Yin , Cong Wang , Qing Gu

Cognitive diagnosis (CD) plays a crucial role in intelligent education, evaluating students' comprehension of knowledge concepts based on their test histories. However, current CD methods often model students, exercises, and knowledge…

计算与语言 · 计算机科学 2025-05-21 Weiming Zhang , Lingyue Fu , Qingyao Li , Kounianhua Du , Jianghao Lin , Jingwei Yu , Wei Xia , Weinan Zhang , Ruiming Tang , Yong Yu

Despite the remarkable capabilities of Large Vision Language Models (LVLMs), they still lack detailed knowledge about specific entities. Retrieval-augmented Generation (RAG) is a widely adopted solution that enhances LVLMs by providing…

计算与语言 · 计算机科学 2026-02-09 Jongha Kim , Byungoh Ko , Jeehye Na , Jinsung Yoon , Hyunwoo J. Kim

Large Language Models have demonstrated remarkable abilities in reasoning and planning by breaking down complex problems into sequential steps. Despite their success in various domains like mathematical problem-solving and coding, LLMs face…

人工智能 · 计算机科学 2024-10-29 Chang Ma , Haiteng Zhao , Junlei Zhang , Junxian He , Lingpeng Kong

This study aims to address the pervasive challenge of quantifying uncertainty in large language models (LLMs) without logit-access. Conformal Prediction (CP), known for its model-agnostic and distribution-free features, is a desired…

计算与语言 · 计算机科学 2024-04-05 Jiayuan Su , Jing Luo , Hongwei Wang , Lu Cheng

Large Vision-Language Models (LVLMs) have demonstrated remarkable multimodal capabilities, but they inherit the tendency to hallucinate from their underlying language models. While visual contrastive decoding has been proposed to mitigate…

计算机视觉与模式识别 · 计算机科学 2026-03-04 Eun Woo Im , Muhammad Kashif Ali , Vivek Gupta

Safety-aligned large language models (LLMs) often generate refusal responses to harmless queries due to the over-refusal problem. However, existing methods for mitigating over-refusal cannot maintain a low refusal ratio for harmless queries…

计算与语言 · 计算机科学 2026-04-21 Yupeng Qi , Ziyu Lyu , Lixin Cui , Lu Bai , Feng Xia

Augmenting Large Language Models (LLMs) with retrieved external knowledge has proven effective for improving the factual accuracy of generated responses. Despite their success, retrieval-augmented LLMs still face the distractibility issue,…

计算与语言 · 计算机科学 2025-02-18 Zexuan Qiu , Zijing Ou , Bin Wu , Jingjing Li , Aiwei Liu , Irwin King

To mitigate the hallucination problem in large language models, DoLa exploits early exit logits from the same model as a contrastive prior. However, we found that these early exit logits tend to be flat, low in magnitude, and fail to…

计算与语言 · 计算机科学 2025-09-24 Byeongho Yu , Changhun Lee , Jungyu Jin , Eunhyeok Park

The increasing scale and complexity of large language models (LLMs) pose significant inference latency challenges, primarily due to their autoregressive decoding paradigm characterized by the sequential nature of next-token prediction. By…

计算与语言 · 计算机科学 2025-08-15 Keyu Chen , Zhifeng Shen , Daohai Yu , Haoqian Wu , Wei Wen , Jianfeng He , Ruizhi Qiao , Xing Sun

Large Language Models (LLMs) often generate hallucinations, producing outputs that are contextually inaccurate or factually incorrect. We introduce HICD, a novel method designed to induce hallucinations for contrastive decoding to mitigate…

计算与语言 · 计算机科学 2025-05-26 Xinyan Jiang , Hang Ye , Yongxin Zhu , Xiaoying Zheng , Zikang Chen , Jun Gong

In spite of the great potential of large language models (LLMs) across various tasks, their deployment on resource-constrained devices remains challenging due to their excessive computational and memory demands. Quantization has emerged as…

机器学习 · 计算机科学 2025-02-28 Hao Mark Chen , Fuwen Tan , Alexandros Kouris , Royson Lee , Hongxiang Fan , Stylianos I. Venieris

Logical reasoning is a pivotal component in the field of artificial intelligence. Proof planning, particularly in contexts requiring the validation of explanation accuracy, continues to present challenges. The recent advancement of large…

计算与语言 · 计算机科学 2025-10-31 Ying Su , Mingwen Liu , Zhijiang Guo

Probabilistic linear discriminant analysis (PLDA) has broad application in open-set verification tasks, such as speaker verification. A key concern for PLDA is that the model is too simple (linear Gaussian) to deal with complicated data;…

声音 · 计算机科学 2021-11-25 Di Wang , Lantian Li , Hongzhi Yu , Dong Wang

The deployment of large language models (LLMs) faces considerable challenges concerning resource constraints and inference efficiency. Recent research has increasingly focused on smaller, task-specific models enhanced by distilling…

计算与语言 · 计算机科学 2024-09-20 Wei Wang , Zhaowei Li , Qi Xu , Yiqing Cai , Hang Song , Qi Qi , Ran Zhou , Zhida Huang , Tao Wang , Li Xiao

When answering complex questions, large language models (LLMs) may produce answers that do not satisfy all criteria of the question. While existing self-evaluation techniques aim to detect if such answers are correct, these techniques are…

计算与语言 · 计算机科学 2023-05-25 Nishant Balepur , Jie Huang , Samraj Moorjani , Hari Sundaram , Kevin Chen-Chuan Chang

Deductive coding is a widely used qualitative research method for determining the prevalence of themes across documents. While useful, deductive coding is often burdensome and time consuming since it requires researchers to read, interpret,…

计算与语言 · 计算机科学 2023-06-28 Robert Chew , John Bollenbacher , Michael Wenger , Jessica Speer , Annice Kim

Ensuring truthfulness in large language models (LLMs) remains a critical challenge for reliable text generation. While supervised fine-tuning and reinforcement learning with human feedback have shown promise, they require a substantial…

机器学习 · 计算机科学 2026-03-17 Manh Nguyen , Sunil Gupta , Hung Le

Large-scale self-supervised pre-trained speech encoders outperform conventional approaches in speech recognition and translation tasks. Due to the high cost of developing these large models, building new encoders for new tasks and deploying…

计算与语言 · 计算机科学 2023-12-29 Heng-Jui Chang , Ning Dong , Ruslan Mavlyutov , Sravya Popuri , Yu-An Chung

Large Vision-Language Models (LVLMs) have obtained impressive performance in visual content understanding and multi-modal reasoning. Unfortunately, these large models suffer from serious hallucination problems and tend to generate…

计算机视觉与模式识别 · 计算机科学 2025-03-04 Wei Suo , Lijun Zhang , Mengyang Sun , Lin Yuanbo Wu , Peng Wang , Yanning Zhang