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Biomedical datasets are often modeled as knowledge graphs (KGs) because they capture the multi-relational, heterogeneous, and dynamic natures of biomedical systems. KG completion (KGC), can, therefore, help researchers make predictions to…

Artificial Intelligence · Computer Science 2023-07-18 Lauren Nicole DeLong , Ramon Fernández Mir , Zonglin Ji , Fiona Niamh Coulter Smith , Jacques D. Fleuriot

Knowledge graph (KG) question generation (QG) aims to generate natural language questions from KGs and target answers. Previous works mostly focus on a simple setting which is to generate questions from a single KG triple. In this work, we…

Computation and Language · Computer Science 2023-05-02 Yu Chen , Lingfei Wu , Mohammed J. Zaki

Conversational question answering (convQA) over knowledge graphs (KGs) involves answering multi-turn natural language questions about information contained in a KG. State-of-the-art methods of ConvQA often struggle with inexplicit…

Computation and Language · Computer Science 2024-04-01 Lihui Liu , Blaine Hill , Boxin Du , Fei Wang , Hanghang Tong

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Models (LLMs) excel at language understanding but remain limited in knowledge-intensive domains due to hallucinations, outdated information, and limited explainability.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

This paper presents a scholarly Knowledge Graph Question Answering (KGQA) that answers bibliographic natural language questions by leveraging a large language model (LLM) in a few-shot manner. The model initially identifies the top-n…

Computation and Language · Computer Science 2023-11-17 Tilahun Abedissa Taffa , Ricardo Usbeck

In today's rapidly evolving landscape of Artificial Intelligence, large language models (LLMs) have emerged as a vibrant research topic. LLMs find applications in various fields and contribute significantly. Despite their powerful language…

Computation and Language · Computer Science 2024-09-10 Tuan Bui , Oanh Tran , Phuong Nguyen , Bao Ho , Long Nguyen , Thang Bui , Tho Quan

Large Language Models (LLMs) show strong reasoning abilities but rely on internalized knowledge that is often insufficient, outdated, or incorrect when trying to answer a question that requires specific domain knowledge. Knowledge Graphs…

Computation and Language · Computer Science 2025-09-23 Jan-Felix Klein , Lars Ohnemus

Language agents have recently been used to simulate human behavior and user-item interactions for recommendation systems. However, current language agent simulations do not understand the relationships between users and items, leading to…

Artificial Intelligence · Computer Science 2025-01-28 Taicheng Guo , Chaochun Liu , Hai Wang , Varun Mannam , Fang Wang , Xin Chen , Xiangliang Zhang , Chandan K. Reddy

Knowledge graphs (KGs) are a powerful approach for integrating heterogeneous data and making inferences in biology and many other domains, but a coherent solution for constructing, exchanging, and facilitating the downstream use of…

Knowledge Graph Question Answering (KGQA) involves retrieving entities as answers from a Knowledge Graph (KG) using natural language queries. The challenge is to learn to reason over question-relevant KG facts that traverse KG entities and…

Computation and Language · Computer Science 2022-10-26 Costas Mavromatis , George Karypis

Machine Learning has been the quintessential solution for many AI problems, but learning is still heavily dependent on the specific training data. Some learning models can be incorporated with a prior knowledge in the Bayesian set up, but…

Computation and Language · Computer Science 2018-05-22 K M Annervaz , Somnath Basu Roy Chowdhury , Ambedkar Dukkipati

Background : Knowledge is evolving over time, often as a result of new discoveries or changes in the adopted methods of reasoning. Also, new facts or evidence may become available, leading to new understandings of complex phenomena. This is…

Computation and Language · Computer Science 2023-04-24 Ayoub Harnoune , Maryem Rhanoui , Mounia Mikram , Siham Yousfi , Zineb Elkaimbillah , Bouchra El Asri

Knowledge graph (KG) is known to be helpful for the task of question answering (QA), since it provides well-structured relational information between entities, and allows one to further infer indirect facts. However, it is challenging to…

Machine Learning · Computer Science 2017-11-29 Yuyu Zhang , Hanjun Dai , Zornitsa Kozareva , Alexander J. Smola , Le Song

Commonsense question answering (QA) requires a model to grasp commonsense and factual knowledge to answer questions about world events. Many prior methods couple language modeling with knowledge graphs (KG). However, although a KG contains…

Computation and Language · Computer Science 2021-08-04 Yichong Xu , Chenguang Zhu , Ruochen Xu , Yang Liu , Michael Zeng , Xuedong Huang

Knowledge Graphs (KG) provide us with a structured, flexible, transparent, cross-system, and collaborative way of organizing our knowledge and data across various domains in society and industrial as well as scientific disciplines. KGs…

Drug discovery and development is a complex and costly process. Machine learning approaches are being investigated to help improve the effectiveness and speed of multiple stages of the drug discovery pipeline. Of these, those that use…

Artificial Intelligence · Computer Science 2022-09-27 Stephen Bonner , Ian P Barrett , Cheng Ye , Rowan Swiers , Ola Engkvist , Andreas Bender , Charles Tapley Hoyt , William L Hamilton

Biomedical knowledge graphs (KGs) hold rich information on entities such as diseases, drugs, and genes. Predicting missing links in these graphs can boost many important applications, such as drug design and repurposing. Recent work has…

Computation and Language · Computer Science 2021-09-22 Rahul Nadkarni , David Wadden , Iz Beltagy , Noah A. Smith , Hannaneh Hajishirzi , Tom Hope

Knowledge Graphs (KG) constitute a flexible representation of complex relationships between entities particularly useful for biomedical data. These KG, however, are very sparse with many missing edges (facts) and the visualisation of the…

Artificial Intelligence · Computer Science 2016-12-08 Armando Vieira

Large Language Models (LLMs) are being adopted at an unprecedented rate, yet still face challenges in knowledge-intensive domains like biomedicine. Solutions such as pre-training and domain-specific fine-tuning add substantial computational…

Knowledge graph question answering (KGQA) involves answering natural language questions by leveraging structured information stored in a knowledge graph. Typically, KGQA initially retrieve a targeted subgraph from a large-scale knowledge…

Computation and Language · Computer Science 2024-10-03 Yu Zhang , Kehai Chen , Xuefeng Bai , zhao kang , Quanjiang Guo , Min Zhang