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Knowledge graphs (KGs) have the advantage of providing fine-grained detail for question-answering systems. Unfortunately, building a reliable KG is time-consuming and expensive as it requires human intervention. To overcome this issue, we…

Computation and Language · Computer Science 2021-03-12 Seunghak Yu , Tianxing He , James Glass

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

Most available data is unstructured, making it challenging to access valuable information. Automatically building Knowledge Graphs (KGs) is crucial for structuring data and making it accessible, allowing users to search for information…

Artificial Intelligence · Computer Science 2024-09-06 Yassir Lairgi , Ludovic Moncla , Rémy Cazabet , Khalid Benabdeslem , Pierre Cléau

Large language models with retrieval-augmented generation encounter a pivotal challenge in intricate retrieval tasks, e.g., multi-hop question answering, which requires the model to navigate across multiple documents and generate…

Information Retrieval · Computer Science 2025-05-06 Weijie Chen , Ting Bai , Jinbo Su , Jian Luan , Wei Liu , Chuan Shi

Much of human knowledge in cybersecurity is encapsulated within the ever-growing volume of scientific papers. As this textual data continues to expand, the importance of document organization methods becomes increasingly crucial for…

The scarcity of high-quality knowledge graphs (KGs) remains a critical bottleneck for downstream AI applications, as existing extraction methods rely heavily on error-prone pattern-matching techniques or resource-intensive large language…

Computation and Language · Computer Science 2025-10-28 Teng Lin

Traditional methods of linking large language models (LLMs) to knowledge bases via the semantic similarity search often fall short of capturing complex relational dynamics. To address these limitations, we introduce AutoKG, a lightweight…

Computation and Language · Computer Science 2023-11-28 Bohan Chen , Andrea L. Bertozzi

Irregular data in real-world are usually organized as heterogeneous graphs (HGs) consisting of multiple types of nodes and edges. To explore useful knowledge from real-world data, both the large-scale encyclopedic HG datasets and…

Artificial Intelligence · Computer Science 2023-09-12 Yide Qiu , Shaoxiang Ling , Tong Zhang , Bo Huang , Zhen Cui

There is enormous growth in various fields of research. This development is accompanied by new problems. To solve these problems efficiently and in an optimized manner, algorithms are created and described by researchers in the scientific…

Artificial Intelligence · Computer Science 2022-05-27 Jyotima Patel , Biswanath Dutta

Knowledge Graph Completion (KGC) has been recently extended to multiple knowledge graph (KG) structures, initiating new research directions, e.g. static KGC, temporal KGC and few-shot KGC. Previous works often design KGC models closely…

Computation and Language · Computer Science 2022-09-19 Chen Chen , Yufei Wang , Bing Li , Kwok-Yan Lam

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 graph completion (KGC) aims to predict missing facts in knowledge graphs (KGs), which is crucial as modern KGs remain largely incomplete. While training KGC models on multiple aligned KGs can improve performance, previous methods…

Computation and Language · Computer Science 2023-12-19 Wei Tang , Zhiqian Wu , Yixin Cao , Yong Liao , Pengyuan Zhou

In contrast to large text corpora, knowledge graphs (KG) provide dense and structured representations of factual information. This makes them attractive for systems that supplement or ground the knowledge found in pre-trained language…

Computation and Language · Computer Science 2023-06-06 Sondre Wold , Lilja Øvrelid , Erik Velldal

Knowledge Graphs (KGs) are increasingly used to represent and explore complex, interconnected data across diverse domains. However, existing KG visualization systems remain limited because they fail to provide the context of user questions.…

Human-Computer Interaction · Computer Science 2026-04-14 Rumali Perera , Xiaoqi Wang , Han-wei Shen

Constructing domain-specific knowledge graphs from unstructured text remains challenging due to heterogeneous entity mentions, long-tail relation distributions, and the absence of standardized schemas. We present LEC-KG, a bidirectional…

Computation and Language · Computer Science 2026-03-02 Yikai Zeng , Yingchao Piao , Changhua Pei , Jianhui Li

Constructing Knowledge Graphs (KGs) from unstructured text provides a structured framework for knowledge representation and reasoning, yet current LLM-based approaches struggle with a fundamental trade-off: factual coverage often leads to…

Computation and Language · Computer Science 2026-04-24 Sanghyeok Choi , Woosang Jeon , Kyuseok Yang , Taehyeong Kim

Digitisation in the cultural heritage sector has produced large but fragmented repositories of museum collection data, spanning structured catalogue records, images, and unstructured descriptions. Existing museum information systems often…

Artificial Intelligence · Computer Science 2026-05-25 Jinhao Li , Jianzhong Qi , Soyeon Caren Han , Eun-Jung Holden

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

The advent of Large Language Models (LLMs) has revolutionized natural language processing. However, these models face challenges in retrieving precise information from vast datasets. Retrieval-Augmented Generation (RAG) was developed to…

Information Retrieval · Computer Science 2025-03-04 Yuxin Yang , Haoyang Wu , Tao Wang , Jia Yang , Hao Ma , Guojie Luo

Efficiently finding doctors and locations is an important search problem for patients in the healthcare domain, for which traditional information retrieval methods tend not to work optimally. In the last ten years, knowledge graphs (KGs)…

Artificial Intelligence · Computer Science 2023-10-10 Mayank Kejriwal , Hamid Haidarian , Min-Hsueh Chiu , Andy Xiang , Deep Shrestha , Faizan Javed
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