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Retrieval-augmented generation (RAG) enhances large language models (LLMs) by incorporating additional information from retrieval. However, studies have shown that LLMs still face challenges in effectively using the retrieved information,…

计算与语言 · 计算机科学 2024-06-13 Shicheng Xu , Liang Pang , Mo Yu , Fandong Meng , Huawei Shen , Xueqi Cheng , Jie Zhou

Large Multimodal Models (LMMs), or Vision-Language Models (VLMs), have shown impressive capabilities in a wide range of visual tasks. However, they often struggle with fine-grained visual reasoning, failing to identify domain-specific…

计算机视觉与模式识别 · 计算机科学 2025-02-26 Yucheng Shi , Quanzheng Li , Jin Sun , Xiang Li , Ninghao Liu

Recent explorations of large-scale pre-trained language models (PLMs) have revealed the power of PLMs with huge amounts of parameters, setting off a wave of training ever-larger PLMs. However, it requires tremendous computational resources…

计算与语言 · 计算机科学 2022-04-27 Yujia Qin , Yankai Lin , Jing Yi , Jiajie Zhang , Xu Han , Zhengyan Zhang , Yusheng Su , Zhiyuan Liu , Peng Li , Maosong Sun , Jie Zhou

In domains such as materials science, biomedicine, and finance, high-stakes deployment of large language models (LLMs) requires injecting private, domain-specific knowledge that is proprietary, fast-evolving, and under-represented in public…

计算与语言 · 计算机科学 2026-04-15 Rongji Li , Jian Xu , Yi Chen , Xueqing Chen , Yisheng Yang , Jiayi Wang , Xingyu Chen , Chunyu Xie , Dawei Leng , Xu-Yao Zhang

Semantic Knowledge Graphs (SKG) face challenges with scalability, flexibility, contextual understanding, and handling unstructured or ambiguous information. However, they offer formal and structured knowledge enabling highly interpretable…

人工智能 · 计算机科学 2025-01-22 Aldo Gangemi , Andrea Giovanni Nuzzolese

Fine-tuning adapts pretrained models for specific tasks but poses the risk of catastrophic forgetting (CF), where critical knowledge from pretraining is overwritten. To address the issue of CF in a general-purpose framework, we propose…

计算与语言 · 计算机科学 2025-11-25 Runyu Wang , Peng Ping , Zhengyu Guo , Xiaoye Zhang , Quan Shi , Liting Zhou , Tianbo Ji

This survey reviews how large language models (LLMs) are transforming synthetic training data generation in both natural language and code domains. By producing artificial but task-relevant examples, these models can significantly augment…

计算与语言 · 计算机科学 2025-11-21 Mihai Nadas , Laura Diosan , Andreea Tomescu

Multi-hop question answering is widely used to evaluate the reasoning capabilities of large language models (LLMs), as it requires integrating multiple pieces of supporting knowledge to arrive at a correct answer. While prior work has…

计算与语言 · 计算机科学 2026-01-13 Zhuoyi Yang , Yurun Song , Iftekhar Ahmed , Ian Harris

In enterprise settings, efficiently retrieving relevant information from large and complex knowledge bases is essential for operational productivity and informed decision-making. This research presents a systematic empirical framework for…

Recent research has explored distilling knowledge from large language models (LLMs) to optimize retriever models, especially within the retrieval-augmented generation (RAG) framework. However, most existing training methods rely on…

信息检索 · 计算机科学 2024-06-19 Zizhong Li , Haopeng Zhang , Jiawei Zhang

Retrieval-Augmented Generation (RAG) systems have shown promise in enhancing the performance of Large Language Models (LLMs). However, these systems face challenges in effectively integrating external knowledge with the LLM's internal…

Document-level knowledge graph (KG) construction faces a fundamental scaling challenge: existing methods either rely on expensive large language models (LLMs), making them economically nonviable for large-scale corpora, or employ smaller…

Retrieval augmented generation (RAG) pipelines are commonly used in tasks such as question-answering (QA), relying on retrieving relevant documents from a vector store computed using a pretrained embedding model. However, if the retrieved…

计算与语言 · 计算机科学 2024-10-18 Ambuje Gupta , Mrinal Rawat , Andreas Stolcke , Roberto Pieraccini

Large Language Models (LLMs) have achieved remarkable success but remain data-inefficient, especially when learning from small, specialized corpora with limited and proprietary data. Existing synthetic data generation methods for continue…

计算与语言 · 计算机科学 2025-09-16 Shengjie Ma , Xuhui Jiang , Chengjin Xu , Cehao Yang , Liyu Zhang , Jian Guo

Passage re-ranking is to obtain a permutation over the candidate passage set from retrieval stage. Re-rankers have been boomed by Pre-trained Language Models (PLMs) due to their overwhelming advantages in natural language understanding.…

信息检索 · 计算机科学 2022-04-26 Qian Dong , Yiding Liu , Suqi Cheng , Shuaiqiang Wang , Zhicong Cheng , Shuzi Niu , Dawei Yin

Retrieval-Augmented Generation (RAG) enables large language models (LLMs) to access broader knowledge sources, yet factual inconsistencies persist due to noise in retrieved documents-even with advanced retrieval methods. We demonstrate that…

计算与语言 · 计算机科学 2025-06-04 Yongjian Li , HaoCheng Chu , Yukun Yan , Zhenghao Liu , Shi Yu , Zheni Zeng , Ruobing Wang , Sen Song , Zhiyuan Liu , Maosong Sun

The rapid advancement of large language models (LLMs) has opened new boundaries in the extraction and synthesis of medical knowledge, particularly within evidence synthesis. This paper reviews the state-of-the-art applications of LLMs in…

The deployment of large language models (LLMs) like ChatGPT and Gemini has shown their powerful natural language generation capabilities. However, these models can inadvertently learn and retain sensitive information and harmful content…

密码学与安全 · 计算机科学 2025-10-14 Shang Wang , Tianqing Zhu , Dayong Ye , Wanlei Zhou

Large Language Models (LLMs) and Knowledge Graphs (KGs) offer a promising approach to robust and explainable Question Answering (QA). While LLMs excel at natural language understanding, they suffer from knowledge gaps and hallucinations.…

机器学习 · 计算机科学 2025-04-15 Jasper Linders , Jakub M. Tomczak

Language Models (LMs) memorize a vast amount of factual knowledge, exhibiting strong performance across diverse tasks and domains. However, it has been observed that the performance diminishes when dealing with less-popular or low-frequency…

计算与语言 · 计算机科学 2024-12-03 Heydar Soudani , Evangelos Kanoulas , Faegheh Hasibi