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Advancements in Large Language Models (LLMs) have significantly enhanced instruction-following capabilities. However, most Instruction Fine-Tuning (IFT) datasets are predominantly in English, limiting model performance in other languages.…

LLM deployment in critical domains is currently impeded by persistent hallucinations--generating plausible but factually incorrect assertions. While scaling laws drove significant improvements in general capabilities, theoretical frameworks…

机器学习 · 计算机科学 2026-01-29 Jiayun Wu , Jiashuo Liu , Zhiyuan Zeng , Tianyang Zhan , Tianle Cai , Wenhao Huang

We show that differentially private full fine-tuning (DP-FFT) can distort pre-trained backbone features based on both theoretical and empirical results. We identify the cause of the distortion as the misalignment between the pre-trained…

机器学习 · 计算机科学 2025-11-10 Shuqi Ke , Charlie Hou , Sewoong Oh , Giulia Fanti

Masked language modeling (MLM) plays a key role in pretraining large language models. But the MLM objective is often dominated by high-frequency words that are sub-optimal for learning factual knowledge. In this work, we propose an approach…

计算与语言 · 计算机科学 2023-04-05 Nafis Sadeq , Byungkyu Kang , Prarit Lamba , Julian McAuley

The fluency and creativity of large pre-trained language models (LLMs) have led to their widespread use, sometimes even as a replacement for traditional search engines. Yet language models are prone to making convincing but factually…

计算与语言 · 计算机科学 2023-11-15 Katherine Tian , Eric Mitchell , Huaxiu Yao , Christopher D. Manning , Chelsea Finn

Large language models (LLMs) have significantly advanced in reasoning tasks through reinforcement learning (RL) optimization, achieving impressive capabilities across various challenging benchmarks. However, our empirical analysis reveals a…

计算与语言 · 计算机科学 2025-11-07 Junyi Li , Hwee Tou Ng

This paper presents a study on strategies to enhance the translation capabilities of large language models (LLMs) in the context of machine translation (MT) tasks. The paper proposes a novel paradigm consisting of three stages: Secondary…

计算与语言 · 计算机科学 2024-04-16 Jiaxin Guo , Hao Yang , Zongyao Li , Daimeng Wei , Hengchao Shang , Xiaoyu Chen

Mathematical reasoning is a challenging task for large language models (LLMs), while the scaling relationship of it with respect to LLM capacity is under-explored. In this paper, we investigate how the pre-training loss, supervised data…

计算与语言 · 计算机科学 2023-09-14 Zheng Yuan , Hongyi Yuan , Chengpeng Li , Guanting Dong , Keming Lu , Chuanqi Tan , Chang Zhou , Jingren Zhou

The increasing use of vision-language models (VLMs) in healthcare applications presents great challenges related to hallucinations, in which the models may generate seemingly plausible results that are in fact incorrect. Such hallucinations…

人工智能 · 计算机科学 2025-03-03 Qiao Yan , Yuchen Yuan , Xiaowei Hu , Yihan Wang , Jiaqi Xu , Jinpeng Li , Chi-Wing Fu , Pheng-Ann Heng

Widely used language models (LMs) are typically built by scaling up a two-stage training pipeline: a pre-training stage that uses a very large, diverse dataset of text and a fine-tuning (sometimes, 'alignment') stage that uses targeted…

计算与语言 · 计算机科学 2023-10-20 Eric Mitchell , Rafael Rafailov , Archit Sharma , Chelsea Finn , Christopher D. Manning

Recent Multimodal Large Language Models (MLLMs) excel on benchmark vision-language tasks, yet little is known about how input visual quality shapes their responses. Does higher perceptual quality of images already translate to better MLLM…

计算机视觉与模式识别 · 计算机科学 2025-06-19 Shuo Xing , Lanqing Guo , Hongyuan Hua , Seoyoung Lee , Peiran Li , Yufei Wang , Zhangyang Wang , Zhengzhong Tu

Detecting hallucinations in large language model (LLM) outputs is pivotal, yet traditional fine-tuning for this classification task is impeded by the expensive and quickly outdated annotation process, especially across numerous vertical…

人工智能 · 计算机科学 2024-07-09 Dongxu Zhang , Varun Gangal , Barrett Martin Lattimer , Yi Yang

Pre-trained language models (PrLM) have to carefully manage input units when training on a very large text with a vocabulary consisting of millions of words. Previous works have shown that incorporating span-level information over…

计算与语言 · 计算机科学 2021-09-16 Rongzhou Bao , Zhuosheng Zhang , Hai Zhao

Pre-training and self-training are two approaches to semi-supervised learning. The comparison between pre-training and self-training has been explored. However, the previous works led to confusing findings: self-training outperforms…

计算与语言 · 计算机科学 2024-09-05 Yiheng Wang , Jiayu Lin , Zuoquan Lin

Large language models (LLMs) have shown remarkable performance in natural language processing (NLP) tasks. To comprehend and execute diverse human instructions over image data, instruction-tuned large vision-language models (LVLMs) have…

计算机视觉与模式识别 · 计算机科学 2023-12-05 Lei Wang , Jiabang He , Shenshen Li , Ning Liu , Ee-Peng Lim

Natural language processing (NLP) enables the understanding and generation of meaningful human language, typically using a pre-trained complex architecture on a large dataset to learn the language and next fine-tune its weights to implement…

计算与语言 · 计算机科学 2025-09-04 Yarden Tzach , Ronit D. Gross , Ella Koresh , Shalom Rosner , Or Shpringer , Tal Halevi , Ido Kanter

The rise of Large Language Models (LLMs) has accentuated the need for diverse, high-quality pre-training data. Synthetic data emerges as a viable solution to the challenges of data scarcity and inaccessibility. While previous literature has…

计算与语言 · 计算机科学 2024-10-24 Hao Chen , Abdul Waheed , Xiang Li , Yidong Wang , Jindong Wang , Bhiksha Raj , Marah I. Abdin

Despite achieving outstanding performance on various cross-modal tasks, current large vision-language models (LVLMs) still suffer from hallucination issues, manifesting as inconsistencies between their generated responses and the…

计算机视觉与模式识别 · 计算机科学 2025-06-05 Rui Hu , Yahan Tu , Shuyu Wei , Dongyuan Lu , Jitao Sang

While supervised fine-tuning (SFT) has been a straightforward approach for tailoring the output of foundation large language model (LLM) to specific preferences, concerns have been raised about the depth of this alignment, with some…

计算与语言 · 计算机科学 2024-04-26 Runzhe Zhan , Xinyi Yang , Derek F. Wong , Lidia S. Chao , Yue Zhang

Real-world model deployments demand strong performance on narrow domains where data is often scarce. Typically, practitioners finetune models to specialize them, but this risks overfitting to the domain and forgetting general knowledge. We…