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Large Language Models (LLMs) have demonstrated remarkable capabilities in text generation and understanding, yet their reliance on implicit, unstructured knowledge often leads to factual inaccuracies and limited interpretability. Knowledge…

计算与语言 · 计算机科学 2025-06-17 Qinggang Zhang

Graph Neural Networks (GNNs) are widely adopted in advanced AI systems due to their capability of representation learning on graph data. Even though GNN explanation is crucial to increase user trust in the systems, it is challenging due to…

机器学习 · 计算机科学 2022-08-08 Tien-Cuong Bui , Wen-syan Li , Sang-Kyun Cha

Reasoning over temporal knowledge graphs (TKGs) is fundamental to improving the efficiency and reliability of intelligent decision-making systems and has become a key technological foundation for future artificial intelligence applications.…

计算与语言 · 计算机科学 2026-01-05 Wang Xing , Wei Song , Siyu Lin , Chen Wu , Zhesi Li , Man Wang

Reasoning paths are reliable information in knowledge graph completion (KGC) in which algorithms can find strong clues of the actual relation between entities. However, in real-world applications, it is difficult to guarantee that…

信息检索 · 计算机科学 2025-10-08 Yanning Hou , Sihang Zhou , Ke Liang , Lingyuan Meng , Xiaoshu Chen , Ke Xu , Siwei Wang , Xinwang Liu , Jian Huang

Reasoning over knowledge graphs (KGs) with first-order logic (FOL) queries is challenging due to the inherent incompleteness of real-world KGs and the compositional complexity of logical query structures. Most existing methods rely on…

计算与语言 · 计算机科学 2025-12-23 Ziyan Zhang , Chao Wang , Zhuo Chen , Lei Chen , Chiyi Li , Kai Song

Knowledge graph completion (KGC), the task of predicting missing information based on the existing relational data inside a knowledge graph (KG), has drawn significant attention in recent years. However, the predictive power of KGC methods…

计算与语言 · 计算机科学 2023-05-26 Weihang Zhang , Ovidiu Serban , Jiahao Sun , Yi-ke Guo

Knowledge graphs (KGs) play a crucial role in many applications, such as question answering, but incompleteness is an urgent issue for their broad application. Much research in knowledge graph completion (KGC) has been performed to resolve…

人工智能 · 计算机科学 2023-01-10 Yinyu Lan , Shizhu He , Kang Liu , Jun Zhao

Recently, researchers utilize Knowledge Graph (KG) as side information in recommendation system to address cold start and sparsity issue and improve the recommendation performance. Existing KG-aware recommendation model use the feature of…

信息检索 · 计算机科学 2019-08-20 Chang-You Tai , Meng-Ru Wu , Yun-Wei Chu , Shao-Yu Chu

Temporal Knowledge Graphs (TKGs) represent dynamic facts as timestamped relations between entities. TKG completion involves forecasting missing or future links, requiring models to reason over time-evolving structure. While LLMs show…

机器学习 · 计算机科学 2025-05-26 Ömer Faruk Akgül , Feiyu Zhu , Yuxin Yang , Rajgopal Kannan , Viktor Prasanna

Graph Neural Networks (GNNs) have attracted tremendous attention by demonstrating their capability to handle graph data. However, they are difficult to be deployed in resource-limited devices due to model sizes and scalability constraints…

机器学习 · 计算机科学 2023-02-02 Yijun Tian , Shichao Pei , Xiangliang Zhang , Chuxu Zhang , Nitesh V. Chawla

Although Large Language Models achieve strong success in many tasks, they still suffer from hallucinations and knowledge deficiencies in real-world applications. Many knowledge graph-based retrieval-augmented generation (KG-RAG) methods…

人工智能 · 计算机科学 2025-05-28 Hairu Wang , Yuan Feng , Xike Xie , S Kevin Zhou

Due to the development of graph neural networks, graph-based representation learning methods have made great progress in recommender systems. However, data sparsity is still a challenging problem that most graph-based recommendation methods…

信息检索 · 计算机科学 2021-10-25 Chaoyang Wang , Zhiqiang Guo , Guohui Li , Jianjun Li , Peng Pan , Ke Liu

The design and development of text-based knowledge graph completion (KGC) methods leveraging textual entity descriptions are at the forefront of research. These methods involve advanced optimization techniques such as soft prompts and…

计算与语言 · 计算机科学 2024-06-28 Rui Yang , Jiahao Zhu , Jianping Man , Li Fang , Yi Zhou

Large language models (LLMs) offer new opportunities for constructing knowledge graphs (KGs) from unstructured clinical narratives. However, existing approaches often rely on structured inputs and lack robust validation of factual accuracy…

人工智能 · 计算机科学 2026-01-06 Udiptaman Das , Krishnasai B. Atmakuri , Duy Ho , Chi Lee , Yugyung Lee

Knowledge Graph-based Retrieval-Augmented Generation (KG-RAG) significantly enhances the reasoning capabilities of LargeLanguage Models by leveraging structured knowledge. However, existing KG-RAG frameworks typically operate as open-loop…

信息检索 · 计算机科学 2025-08-14 Xujie Yuan , Shimin Di , Jielong Tang , Libin Zheng , Jian Yin

Knowledge graph (KG) reasoning is a task that aims to predict unknown facts based on known factual samples. Reasoning methods can be divided into two categories: rule-based methods and KG-embedding based methods. The former possesses…

人工智能 · 计算机科学 2024-07-08 Fengsong Sun , Jinyu Wang , Zhiqing Wei , Xianchao Zhang

Graph Contrastive Learning (GCL) has emerged as a powerful paradigm for training Graph Neural Networks (GNNs) in the absence of task-specific labels. However, its scalability on large-scale graphs is hindered by the intensive message…

机器学习 · 计算机科学 2025-11-12 Xiang Chen , Kun Yue , Wenjie Liu , Zhenyu Zhang , Liang Duan

Knowledge graphs, as the cornerstone of many AI applications, usually face serious incompleteness problems. In recent years, there have been many efforts to study automatic knowledge graph completion (KGC), most of which use existing…

计算与语言 · 计算机科学 2022-10-13 Xin Lv , Yankai Lin , Zijun Yao , Kaisheng Zeng , Jiajie Zhang , Lei Hou , Juanzi Li

Knowledge graph completion (KGC) aims to predict missing triples in knowledge graphs (KGs) by leveraging existing triples and textual information. Recently, generative large language models (LLMs) have been increasingly employed for graph…

人工智能 · 计算机科学 2025-11-11 Yongkang Xiao , Sinian Zhang , Yi Dai , Huixue Zhou , Jue Hou , Jie Ding , Rui Zhang

Generalized planning using deep reinforcement learning (RL) combined with graph neural networks (GNNs) has shown promising results in various symbolic planning domains described by PDDL. However, existing approaches typically represent…

人工智能 · 计算机科学 2025-11-11 Sangwoo Jeon , Juchul Shin , Gyeong-Tae Kim , YeonJe Cho , Seongwoo Kim