I joined the DDIS group at the Department of Informatics as a Ph.D. student in Sep 2020. Also, I am a member of the URPP Dynamics of Healthy Aging project.
I received my master’s degree in Computer Science and Technology from Xi’an Jiaotong University in June 2020. I have a bachelor’s degree in Computer Science and Technology and a bachelor’s degree in Finance from Xi’an Jiaotong University.
I was a joint master's student at RWTH Aachen University from Sep 2018 to Sep 2019. Concurrently, I worked as a student research assistant at Fraunhofer FIT from Feb 2019 to Jul 2019.
My research interests include question answering, semantic web, natural language processing, and multimodal data.

• Feb 2024 - Our paper QAGCN got accepted by ESWC 2024.
• Feb 2024 - I had a research visit to the Learning and Reasoning Lab at Vrije Universiteit Amsterdam and the Discovery Lab at Elsevier.
• Jan 2024 - Based on NLQxform, we developed and open-sourced NLQxform-UI, which is an interactive natural language QA system over DBLP Knowledge Graph.
• Oct 2023 - Our system NLQxform is the winner of the DBLP-QuAD question answering (QA) task in theScholarly QALD Challenge @ ISWC 2023.

• Fan Feng:  Natural Language Question Answering via Knowledge Graph Reasoning (MSc)
• Tijana Kostovic:  Natural Language Question Answering over Multimodal Healthy Aging Data (MSc)
• Zhiruo Zhang:  Answer Aggregation and Verbalization for Complex Question Answering (MSc)
• Pascal Severin Andermatt:  Multilingual Question Generation from Knowledge Graphs (MSc)

• Fall 2021: MSc, 03SMMINF4571 - Advanced Topics in Artificial Intelligence (main TA)
• Spring 2022:  BSc/MSc, 03SMBINFS153 - Current Trends in Dynamic and Distributed Information Systems
• Fall 2022:  MSc, 03SM22MI0004 - Advanced Topics in Artificial Intelligence (main TA)

• Program Committee Member: ISWC 2024,ESWC 2024, CCKS-IJCKG 2024, ISWC 2023, TheWebConf (WWW) 2023, ESWC 2023,  CCKS 2023,ISWC 2022, CCKS 2022, ISWC 2021, LSC@ICMR 2021, CCKS 2021
• Reviewer (Subreviewer): ICMR 2024, Semantic Web Journal, WikiData@ISWC 2022, TheWebConf (WWW) 2019, WebSci 2019

DBLP   Google Scholar

• GNN2R: Weakly-Supervised Rationale-Providing Question Answering over Knowledge Graphs
  Ruijie Wang, Luca Rossetto, Michael Cochez, Abraham Bernstein
  ArXiv Preprint 2024
  [Code]
   

• QAGCN: Answering Multi-Relation Questions via Single-Step Implicit Reasoning over Knowledge Graphs
  Ruijie Wang, Luca Rossetto, Michael Cochez, Abraham Bernstein
  The 21st European Semantic Web Conference (ESWC 2024)
  [Code]
   

• NLQxform-UI: A Natural Language Interface for Querying DBLP Interactively
  Ruijie Wang, Zhiruo Zhang, Luca Rossetto, Florian Ruosch, Abraham Bernstein
  ArXiv Preprint 2024
  [Code]
   

• NLQxform: A Language Model-based Question to SPARQL Transformer
  Ruijie Wang, Zhiruo Zhang, Luca Rossetto, Florian Ruosch, Abraham Bernstein
  Scholarly QALD @ The 22nd International Semantic Web Conference (ISWC 2023)
  Winner of the challenge DBLP_QuAD KGQA 
  [Code][Poster] 
   

• Multi-Mode Clustering for Graph-Based Lifelog Retrieval
  Luca Rossetto, Oana Inel, Svenja Lange, Florian Ruosch, Ruijie Wang*, Abraham Bernstein
  *ordered alphabetically according to the first letter in the last name
  Lifelog Search Challenge @ The 2023 ACM International Conference on Multimedia Retrieval (LSC@ICMR 2023)
   

• Exploring Graph-Querying Approaches in LifeGraph
  Luca Rossetto, Matthias Baumgartner, Ralph Gasser, Lucien Heitz, Ruijie Wang*, Abraham Bernstein
  *ordered alphabetically as above
  Lifelog Search Challenge @ The 2021 ACM International Conference on Multimedia Retrieval (LSC@ICMR 2021)
   

• Structured Query Construction via Knowledge Graph Embedding
  Ruijie Wang, Meng Wang, Jun Liu, Michael Cochez, Stefan Decker
  Knowledge and Information Systems (Journal, Springer)
   

• Leveraging Knowledge Graph Embeddings for Natural Language Question Answering
  Ruijie Wang, Meng Wang, Jun Liu, Weitong Chen, Michael Cochez, Stefan Decker
  The 24th International Conference on Database Systems for Advanced Applications (DASFAA 2019)
   

• Towards Empty Answers in SPARQL: Approximating Querying with RDF Embedding
  Meng Wang, Ruijie Wang, Jun Liu, Yihe Chen, Lei Zhang, Guilin Qi
  The 17th International Semantic Web Conference (ISWC 2018) 
  Best Student Paper Nominee
   

• Graph Embedding Based Query Construction Over Knowledge Graphs
  Ruijie Wang, Meng Wang, Jun Liu, Siyu Yao, Qinghua Zheng
  2018 IEEE International Conference on Big Knowledge (ICBK 2018)
  Best Paper Award