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Anomaly detection from graph data has drawn much attention due to its practical significance in many critical applications including cybersecurity, finance, and social networks. Existing data mining and machine learning methods are either…

机器学习 · 计算机科学 2022-01-25 Yu Zheng , Ming Jin , Yixin Liu , Lianhua Chi , Khoa T. Phan , Yi-Ping Phoebe Chen

Graphs are a widely used paradigm for representing non-Euclidean data, with applications ranging from social network analysis to biomolecular prediction. While graph learning has achieved remarkable progress, real-world graph data presents…

Unsupervised Graph Domain Adaptation (UGDA) involves the transfer of knowledge from a label-rich source graph to an unlabeled target graph under domain discrepancies. Despite the proliferation of methods designed for this emerging task, the…

机器学习 · 计算机科学 2024-11-12 Meihan Liu , Zhen Zhang , Jiachen Tang , Jiajun Bu , Bingsheng He , Sheng Zhou

Significant efforts have been dedicated to integrating the powerful Large Language Models (LLMs) with diverse modalities, particularly focusing on the fusion of language, vision and audio data. However, the graph-structured data, which is…

计算与语言 · 计算机科学 2024-12-31 Zipeng Liu , Likang Wu , Ming He , Zhong Guan , Hongke Zhao , Nan Feng

Do current large language models (LLMs) better solve graph reasoning and generation tasks with parameter updates? In this paper, we propose InstructGraph, a framework that empowers LLMs with the abilities of graph reasoning and generation…

计算与语言 · 计算机科学 2024-02-15 Jianing Wang , Junda Wu , Yupeng Hou , Yao Liu , Ming Gao , Julian McAuley

Anomaly detection on attributed graphs plays an essential role in applications such as fraud detection, intrusion monitoring, and misinformation analysis. However, text-attributed graphs (TAGs), in which node information is expressed in…

Open-set domain adaptation (OSDA) has gained considerable attention in many visual recognition tasks. However, most existing OSDA approaches are limited due to three main reasons, including: (1) the lack of essential theoretical analysis of…

计算机视觉与模式识别 · 计算机科学 2023-01-25 Yadan Luo , Zijian Wang , Zhuoxiao Chen , Zi Huang , Mahsa Baktashmotlagh

Large language models (LLMs) are increasingly being used for generating text in a variety of use cases, including journalistic news articles. Given the potential malicious nature in which these LLMs can be used to generate disinformation at…

计算与语言 · 计算机科学 2023-09-22 Amrita Bhattacharjee , Tharindu Kumarage , Raha Moraffah , Huan Liu

Graph-based Retrieval-Augmented Generation (GraphRAG) enhances Large Language Models (LLMs) by incorporating external knowledge from linearized subgraphs retrieved from knowledge graphs. However, LLMs struggle to interpret the relational…

计算与语言 · 计算机科学 2025-12-11 Shanghao Li , Jinda Han , Yibo Wang , Yuanjie Zhu , Zihe Song , Langzhou He , Kenan Kamel A Alghythee , Philip S. Yu

Large Language Models (LLMs) face significant limitations when applied to large-scale graphs, struggling with context constraints and inflexible reasoning. We present GraphChain, a framework that enables LLMs to analyze complex graphs…

人工智能 · 计算机科学 2025-11-11 Chunyu Wei , Wenji Hu , Xingjia Hao , Xin Wang , Yifan Yang , Yueguo Chen , Yang Tian , Yunhai Wang

With the increasing prevalence of cross-domain Text-Attributed Graph (TAG) Data (e.g., citation networks, recommendation systems, social networks, and ai4science), the integration of Graph Neural Networks (GNNs) and Large Language Models…

机器学习 · 计算机科学 2024-12-18 Xunkai Li , Zhengyu Wu , Jiayi Wu , Hanwen Cui , Jishuo Jia , Rong-Hua Li , Guoren Wang

Graph anomaly detection (GAD), which aims to detect outliers in graph-structured data, has received increasing research attention recently. However, existing GAD methods assume identical training and testing distributions, which is rarely…

机器学习 · 计算机科学 2025-11-11 Junjun Pan , Yixin Liu , Chuan Zhou , Fei Xiong , Alan Wee-Chung Liew , Shirui Pan

The code generation capabilities of Large Language Models (LLMs) have transformed the field of software development. However, this advancement also presents significant security challenges, as LLM-generated code often contains…

密码学与安全 · 计算机科学 2025-10-14 Rupam Patir , Keyan Guo , Haipeng Cai , Hongxin Hu

Large language models (LLMs) have demonstrated immense potential across various tasks. However, research for exploring and improving the capabilities of LLMs in interpreting graph structures remains limited. To address this gap, we conduct…

计算与语言 · 计算机科学 2025-02-17 Jie He , Yijun Yang , Wanqiu Long , Deyi Xiong , Victor Gutierrez-Basulto , Jeff Z. Pan

Recent research on integrating Large Language Models (LLMs) with Graph Neural Networks (GNNs) typically follows two approaches: LLM-centered models, which convert graph data into tokens for LLM processing, and GNN-centered models, which use…

机器学习 · 计算机科学 2024-12-11 Haotong Yang , Xiyuan Wang , Qian Tao , Shuxian Hu , Zhouchen Lin , Muhan Zhang

Continual Graph Learning(CGL)focuses on acquiring new knowledge while retaining previously learned information, essential for real-world graph applications. Current methods grapple with two main issues:1) The Stability-Plasticity Dilemma:…

机器学习 · 计算机科学 2025-09-03 Jingtao Liu , Xinming Zhang

Recent state-of-the-art source-free domain adaptation (SFDA) methods have focused on learning meaningful cluster structures in the feature space, which have succeeded in adapting the knowledge from source domain to unlabeled target domain…

机器学习 · 计算机科学 2023-02-27 Li Yi , Gezheng Xu , Pengcheng Xu , Jiaqi Li , Ruizhi Pu , Charles Ling , A. Ian McLeod , Boyu Wang

Graph retrieval-augmented generation (GRAG) places high demands on graph-specific retrievers. However, existing retrievers often rely on language models pretrained on plain text, limiting their effectiveness due to domain misalignment and…

信息检索 · 计算机科学 2025-06-04 Xiaochen Wang , Zongyu Wu , Yuan Zhong , Xiang Zhang , Suhang Wang , Fenglong Ma

Although reinforcement learning has been successfully applied in many domains in recent years, we still lack agents that can systematically generalize. While relational inductive biases that fit a task can improve generalization of RL…

机器学习 · 计算机科学 2021-02-09 Zhengyao Jiang , Pasquale Minervini , Minqi Jiang , Tim Rocktaschel

Graph Neural Networks (GNNs) have demonstrated remarkable proficiency in handling a range of graph analytical tasks across various domains, such as e-commerce and social networks. Despite their versatility, GNNs face significant challenges…

机器学习 · 计算机科学 2025-01-08 Zhe-Rui Yang , Jindong Han , Chang-Dong Wang , Hao Liu