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RDF knowledge graphs (KG) are powerful data structures to represent factual statements created from heterogeneous data sources. KG creation is laborious and demands data management techniques to be executed efficiently. This paper tackles…

Artificial Intelligence · Computer Science 2022-10-27 Enrique Iglesias , Samaneh Jozashoori , Maria-Esther Vidal

Synthesizing high-quality training data is crucial for enhancing domain models' reasoning abilities. Existing methods face limitations in long-tail knowledge coverage, effectiveness verification, and interpretability. Knowledge-graph-based…

Artificial Intelligence · Computer Science 2026-03-02 Lun Zhan , Feng Xiong , Huanyong Liu , Feng Zhang , Yuhui Yin

Large language models (LLMs) have demonstrated remarkable performance on question-answering (QA) tasks because of their superior capabilities in natural language understanding and generation. However, LLM-based QA struggles with complex QA…

Computation and Language · Computer Science 2025-09-23 Chuangtao Ma , Yongrui Chen , Tianxing Wu , Arijit Khan , Haofen Wang

Knowledge from diverse application domains is organized as knowledge graphs (KGs) that are stored in RDF engines accessible in the web via SPARQL endpoints. Expressing a well-formed SPARQL query requires information about the graph…

Artificial Intelligence · Computer Science 2023-08-10 Reham Omar , Ishika Dhall , Panos Kalnis , Essam Mansour

Knowledge graphs (KGs) are the cornerstone of the semantic web, offering up-to-date representations of real-world entities and relations. Yet large language models (LLMs) remain largely static after pre-training, causing their internal…

Computation and Language · Computer Science 2026-03-24 Songlin Zhai , Guilin Qi , Yue Wang , Yuan Meng

Large Language Models (LLMs) excel at language understanding but remain limited in knowledge-intensive domains due to hallucinations, outdated information, and limited explainability. Text-based retrieval-augmented generation (RAG) helps…

Computation and Language · Computer Science 2026-02-09 Larissa Pusch , Alexandre Courtiol , Tim Conrad

The increasing demand for deep learning-based foundation models has highlighted the importance of efficient data retrieval mechanisms. Neural graph databases (NGDBs) offer a compelling solution, leveraging neural spaces to store and query…

Machine Learning · Computer Science 2025-07-09 Qi Hu , Weifeng Jiang , Haoran Li , Zihao Wang , Jiaxin Bai , Qianren Mao , Yangqiu Song , Lixin Fan , Jianxin Li

Large Language Models (LLMs) have demonstrated remarkable capabilities in natural language understanding and generation. However, they often struggle with complex reasoning tasks and are prone to hallucination. Recent research has shown…

Computation and Language · Computer Science 2024-12-17 Xue Wu , Kostas Tsioutsiouliklis

The number of published research papers has experienced exponential growth in recent years, which makes it crucial to develop new methods for efficient and versatile information extraction and knowledge discovery. To address this need, we…

Information Retrieval · Computer Science 2023-06-09 Yamei Tu , Rui Qiu , Han-Wei Shen

The availability of vast amounts of visual data with heterogeneous features is a key factor for developing, testing, and benchmarking of new computer vision (CV) algorithms and architectures. Most visual datasets are created and curated for…

Computer Vision and Pattern Recognition · Computer Science 2024-03-29 Jicheng Yuan , Anh Le-Tuan , Manh Nguyen-Duc , Trung-Kien Tran , Manfred Hauswirth , Danh Le-Phuoc

Knowledge Graphs (KGs) often have two characteristics: heterogeneous graph structure and text-rich entity/relation information. Text-based KG embeddings can represent entities by encoding descriptions with pre-trained language models, but…

Computation and Language · Computer Science 2023-09-15 Xin Xie , Zhoubo Li , Xiaohan Wang , Zekun Xi , Ningyu Zhang

While large language models (LLMs) have made considerable advancements in understanding and generating unstructured text, their application in structured data remains underexplored. Particularly, using LLMs for complex reasoning tasks on…

Computation and Language · Computer Science 2023-10-18 Jiho Kim , Yeonsu Kwon , Yohan Jo , Edward Choi

Modern applications commonly need to manage dataset types composed of heterogeneous data and schemas, making it difficult to access them in an integrated way. A single data store to manage heterogeneous data using a common data model is not…

Knowledge graphs (KGs) are commonly used as side information to enhance collaborative signals and improve recommendation quality. In the context of knowledge-aware recommendation (KGR), graph neural networks (GNNs) have emerged as promising…

Information Retrieval · Computer Science 2023-08-16 Yi Liu , Hongrui Xuan , Bohan Li , Meng Wang , Tong Chen , Hongzhi Yin

Recent advancements have witnessed the ascension of Large Language Models (LLMs), endowed with prodigious linguistic capabilities, albeit marred by shortcomings including factual inconsistencies and opacity. Conversely, Knowledge Graphs…

Information Retrieval · Computer Science 2024-07-29 DaiFeng Li , Fan Xu

Nowadays, Knowledge graphs (KGs) have been playing a pivotal role in AI-related applications. Despite the large sizes, existing KGs are far from complete and comprehensive. In order to continuously enrich KGs, automatic knowledge…

Computation and Language · Computer Science 2021-11-12 Zhao Zhang , Fuzhen Zhuang , Hengshu Zhu , Chao Li , Hui Xiong , Qing He , Yongjun Xu

As large language models (LLMs) continue to grow in size, their abilities to tackle complex tasks have significantly improved. However, issues such as hallucination and the lack of up-to-date knowledge largely remain unresolved. Knowledge…

Artificial Intelligence · Computer Science 2026-03-17 Lihui Liu

Mass spectrometry-based metabolomics generates complex, high-dimensional data that holds vast potential for biological discovery but remains difficult to integrate and interpret. Knowledge graphs (KGs) unify this heterogeneous information…

Large Language Models (LLMs) exhibit strong abilities in natural language understanding and generation, yet they struggle with knowledge-intensive reasoning. Structured Knowledge Graphs (KGs) provide an effective form of external knowledge…

Computation and Language · Computer Science 2026-04-15 Shuai Wang , Yinan Yu

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…

Computation and Language · Computer Science 2025-06-17 Qinggang Zhang