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Knowledge Graphs (KGs) represent human-crafted factual knowledge in the form of triplets (head, relation, tail), which collectively form a graph. Question Answering over KGs (KGQA) is the task of answering natural questions grounding the…

Computation and Language · Computer Science 2024-05-31 Costas Mavromatis , George Karypis

Question Answering (QA) systems over Knowledge Graphs (KGs) (KGQA) automatically answer natural language questions using triples contained in a KG. The key idea is to represent questions and entities of a KG as low-dimensional embeddings.…

Machine Learning · Computer Science 2022-03-28 Sirui Li , Kok Kai Wong , Dengya Zhu , Chun Che Fung

The rapid evolution of communication technologies has led to an explosion of standards, rendering traditional expert-dependent consultation methods inefficient and slow. To address this challenge, we propose \textbf{KG2QA}, a question…

Computation and Language · Computer Science 2025-10-16 Zhongze Luo , Weixuan Wan , Tianya Zhang , Dan Wang , Xiaoying Tang

Recent studies have explored the use of Large Language Models (LLMs) with Retrieval Augmented Generation (RAG) for Knowledge Graph Question Answering (KGQA). They typically require rewriting retrieved subgraphs into natural language formats…

Computation and Language · Computer Science 2025-11-21 Yike Wu , Yi Huang , Nan Hu , Yuncheng Hua , Guilin Qi , Jiaoyan Chen , Jeff Z. Pan

In this paper, we aim to improve the reasoning ability of large language models (LLMs) over knowledge graphs (KGs) to answer complex questions. Inspired by existing methods that design the interaction strategy between LLMs and KG, we…

Computation and Language · Computer Science 2024-02-20 Jinhao Jiang , Kun Zhou , Wayne Xin Zhao , Yang Song , Chen Zhu , Hengshu Zhu , Ji-Rong Wen

Knowledge graphs have emerged as a popular method for injecting up-to-date, factual knowledge into large language models (LLMs). This is typically achieved by converting the knowledge graph into text that the LLM can process in context.…

Computation and Language · Computer Science 2025-04-10 Elan Markowitz , Krupa Galiya , Greg Ver Steeg , Aram Galstyan

Large language models (LLMs) have demonstrated impressive reasoning abilities yet remain unreliable on knowledge-intensive, multi-hop questions -- they miss long-tail facts, hallucinate when uncertain, and their internal knowledge lags…

Computation and Language · Computer Science 2025-10-13 Jia Ao Sun , Hao Yu , Fabrizio Gotti , Fengran Mo , Yihong Wu , Yuchen Hui , Jian-Yun Nie

Knowledge Graph based Retrieval-Augmented Generation (KG-RAG) is a technique that enhances Large Language Model (LLM) inference in tasks like Question Answering (QA) by retrieving relevant information from knowledge graphs (KGs). However,…

Artificial Intelligence · Computer Science 2025-09-01 Dongzhuoran Zhou , Yuqicheng Zhu , Xiaxia Wang , Yuan He , Jiaoyan Chen , Steffen Staab , Evgeny Kharlamov

While the next-token prediction (NTP) paradigm enables large language models (LLMs) to express their intrinsic knowledge, its sequential nature constrains performance on specialized, non-generative tasks. We attribute this performance…

Computation and Language · Computer Science 2026-04-28 Mengyu Wang , Xiaoying Zhi , Zhiyi Li , Robin Schmucker , Shay B. Cohen , Tiejun Ma , Fran Silavong

Large Language Models (LLMs) often struggle with producing factually consistent answers due to limitations in their parametric memory. Retrieval-Augmented Generation (RAG) paradigms mitigate this issue by incorporating external knowledge at…

Computation and Language · Computer Science 2026-05-05 Shanglin Wu , Lihui Liu , Jinho D. Choi , Kai Shu

The goal of knowledge graph completion (KGC) is to predict missing links in a KG using trained facts that are already known. In recent, pre-trained language model (PLM) based methods that utilize both textual and structural information are…

Artificial Intelligence · Computer Science 2023-11-09 Sang-Hyun Je , Wontae Choi , Kwangjin Oh

An effective and efficient review of construction contracts is essential for minimizing construction projects losses, but current methods are time-consuming and error-prone. Studies using methods based on Natural Language Processing (NLP)…

Artificial Intelligence · Computer Science 2025-05-20 Chunmo Zheng , Saika Wong , Xing Su , Yinqiu Tang , Ahsan Nawaz , Mohamad Kassem

Embedding based Knowledge Graph (KG) Completion has gained much attention over the past few years. Most of the current algorithms consider a KG as a multidirectional labeled graph and lack the ability to capture the semantics underlying the…

Artificial Intelligence · Computer Science 2024-07-12 Mehwish Alam , Frank van Harmelen , Maribel Acosta

Representation Learning on Knowledge Graphs (KGs) is essential for downstream tasks. The dominant approach, KG Embedding (KGE), represents entities with independent vectors and faces the scalability challenge. Recent studies propose an…

Artificial Intelligence · Computer Science 2023-10-25 Jiaang Li , Quan Wang , Yi Liu , Licheng Zhang , Zhendong Mao

Large language models (LLMs) have shown superior performance without task-specific fine-tuning. Despite the success, the knowledge stored in the parameters of LLMs could still be incomplete and difficult to update due to the computational…

Computation and Language · Computer Science 2023-10-10 Yile Wang , Peng Li , Maosong Sun , Yang Liu

Large language models (LLMs) have demonstrated remarkable capabilities across various domains, although their susceptibility to hallucination poses significant challenges for their deployment in critical areas such as healthcare. To address…

Computation and Language · Computer Science 2024-05-13 Mengjia Niu , Hao Li , Jie Shi , Hamed Haddadi , Fan Mo

Knowledge graph (KG) is an abstraction that can be extracted from text corpora and used for in-depth reasoning. Prior work has leveraged KGs to fine-tune language models (LMs), enabling domain-specific superintelligence. In this work, we…

Computation and Language · Computer Science 2026-05-28 Jake Stephen , Niraj K. Jha

Knowledge graphs (KGs) enhance the performance of large language models (LLMs) and search engines by providing structured, interconnected data that improves reasoning and context-awareness. However, KGs only focus on text data, thereby…

Computation and Language · Computer Science 2024-08-09 Khai Le-Duc , Quy-Anh Dang , Tan-Hanh Pham , Truong-Son Hy

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

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