Dr. Sun Aixin is an Associate Professor and Assistant Chair (Academic) at the School of Computer Science and Engineering (SCSE), Nanyang Technological University (NTU), Singapore. He has been a faculty member of SCSE since 2005 and was the Assistant Chair (Admissions and Outreach) from 2016 to 2020. He is a member of Singapore Data Science Consortium (SDSC) Technical Committee, and SDSC institution representative of NTU. His current research interests include information retrieval, text mining, social computing, and digital libraries.

Dr. Sun received B.A.Sc (1st class honours) and Ph.D. both in Computer Engineering from NTU in 2001 and 2004 respectively. He has published about 200 papers in major international journals and conferences. According to Google Scholar, his papers have received more than 11,000 citations, with h-index 52. Dr. Sun is an associate editor of Neurocomputing, editorial board member of Journal of the Association for Information Science and Technology (JASIST), and editorial board member of Information Retrieval Journal. He has served as the demonstration track co-chair for SIGIR2020, ICDM2018, CIKM2017, PC co-chair for AIRS2019, and general chair for ADMA2017. He was a member of best paper committee for SIGIR2020. He has also served as Area Chair, Senior PC member or PC member for many conferences including SIGIR, WWW, WSDM, EMNLP, AAAI, and IJCAI.

Email: axsun AT ntu DOT edu DOT sg Phone: (+65) 6790 5139 Office: N4-2C-102


I have Research Position openings (including PhD student) from Jan 2022. The research topic is on natural language video retrieval and localization. If you are interested in joining my team, please drop me an email.

Professional services

  • Editorial board member: JASIST, Information Retrieval Journal
  • Associate Editor: Neurocomputing
  • Conference organization and PC members:
    • 2022: WWW22 (SPC), IJCAI22 (SPC), ECIR22
    • 2021: WSDM21, IJCAI21 (AC), NAACL-HIT21 (AC), SIGIR21 (SPC), ACL21, NeurIPS21(Datasets and Benchmarks Track)
    • 2020: SIGIR20 (Demo Co-Chair, Member of Best Paper Committee, PC Member), PAKDD20 (Publicity Co-Chair), EMNLP20 (AC), WWW, WSDM, IJCAI (SPC)
    • 2019: AIRS19 (PC Co-Chair), WWW, WSDM, SIGIR, NLPCC, CIKM (SPC)

Recent papers

  • DocOIE: A Document-level Context-Aware Dataset for OpenIE.
    Kuicai Dong, Yilin Zhao, Aixin Sun, Jung-Jae Kim and Xiaoli Li.. ACL Findings 2021. NLP
  • Parallel Attention Network with Sequence Matching for Video Grounding.
    Hao Zhang, Aixin Sun, Wei Jing, Liangli Zhen, Joey Tianyi Zhou and Siow Mong Rick Goh. ACL Findings 2021. NLP
  • Video Corpus Moment Retrieval with Contrastive Learning.
    Hao Zhang, Aixin Sun, Wei Jing, Guoshun Nan, Liangli Zhen, Joey Tianyi Zhou, and Rick Siow Mong Goh. SIGIR 2021. IR
  • Natural Language Video Localization: A Revisit in Span-based Question Answering Framework.
    Hao Zhang, Aixin Sun, Wei Jing, Liangli Zhen, Joey Tianyi Zhou and Rick Siow Mong Goh. IEEE TPAMI. Accepted 2021 NLP
  • Incremental Community Detection on Large Complex Atributed Network.
    Zhe Chen, Aixin Sun, Xiaokui Xiao. ACM TKDD. Accepted 2021 DM
  • Point-of-Interest Recommendation with Global and Local Context.
    Peng Han, Shuo Shang, Aixin Sun, Peilin Zhao, Kai Zheng, and Xiangliang Zhang. IEEE TKDE. Accepted 2021 RecSys
  • GDPNet: Refining Latent Multi-View Graph for Relation Extraction.
    Fuzhao Xue, Aixin Sun, Hao Zhang, Eng Siong Chng. AAAI 2021 NLP


  • Sep 2021. A fully funded PhD position is available for Jan or Aug 2022 intake
  • Sep 2021. Chen Zhe defended his PhD thesis
  • May 2021. Hao and Kuicai get their papers in Findings of ACL 2021.
  • Apr 2021. Congratulations to Zhang Hao's paper acceptance to SIGIR 2021
  • Feb 2021. Congratulations to Chen Zhe's paper acceptance to ACM TKDD 2021
  • Feb 2021. Congratulations to Zhang Hao's paper acceptance to IEEE TPAMI 2021

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