Dr. Sun Aixin is an Associate Professor and Associate 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 (Acadmic) from 2020 to 2023, and 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.

Dr. Sun received B.A.Sc (1st class honours) and Ph.D. both in Computer Engineering from NTU in 2001 and 2004 respectively. His current research interests include information retrieval, text mining, social computing, and digital libraries. He has published about 200 papers in major international journals and conferences. According to Google Scholar, his papers have received more than 15,500 citations, with h-index 57.

Dr. Sun is an associate editor of ACM Transactions on Information Systems (TOIS), Neurocomputing, editorial board member of Journal of the Association for Information Science and Technology (JASIST), and Information Retrieval Journal. He has served as the Doctoral Consortium co-chair for WSDM2023, demonstration track co-chair for SIGIR2020, ICDM2018, CIKM2017, PC co-chair for AIRS2019, and general chair for ADMA2017. He was a member of the best paper committee for SIGIR2020 and SIGIR2022. 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

Professional services

  • Associate Editor and Editorial Board Member:
    • ACM Transactions on Information Systems (TOIS)
    • Journal of the Association for Information Science and Technology (JASIST)
    • Information Retrieval Journal (IRJ)
    • Neurocomputing
  • Conference organization and PC members:
    • 2023: EMNLP (Publication Chair), SIGIR (SPC, and PC for Perspectives Paper Track), WWW (SPC), IJCAI (AC), WSDM (DC Co-Chair)
    • 2022: WWW (SPC), IJCAI (SPC), ECIR, SIGIR(SPC, and PC for Perspectives Paper Track), KDD (PC for Applied Data Science Track)
    • 2021: WSDM, IJCAI (AC), NAACL-HIT (AC), SIGIR (SPC), ACL, NeurIPS (PC for Datasets and Benchmarks Track)
    • 2020: SIGIR (Demo Co-Chair, Member of Best Paper Committee, PC Member), PAKDD (Publicity Co-Chair), EMNLP (AC), WWW, WSDM, IJCAI (SPC)
    • 2019: AIRS (PC Co-Chair), WWW, WSDM, SIGIR, NLPCC, CIKM (SPC)

Revisiting Recommender Systems

Survey papers

Recent papers

  • MS-DETR: Natural Language Video Localization with Sampling Moment-Moment Interaction.
    Wang Jing, Aixin Sun, Hao Zhang and Xiaoli Li. Accepted in ACL 2023. NLP
  • Few-shot Event Detection: An Empirical Study and a Unified View.
    Yubo Ma, Zehao Wang, Yixin Cao and Aixin Sun. Accepted in ACL 2023. NLP
  • Negation Scope Refinement via Boundary Shift Loss.
    Yin Wu and Aixin Sun. Accepted in ACL 2023 Findings. NLP
  • Take a Fresh Look at Recommender Systems from an Evaluation Standpoint.
    Aixin Sun. Accepted in SIGIR 2023. RecSys
  • SelfCF: A Simple Framework for Self-supervised Collaborative Filtering.
    Xin Zhou, Aixin Sun, Yong Liu, Jie Zhang, Chunyan Miao. Accepted in ACM TORS 2023. RecSys
  • EDU-Capsule: Aspect-based Sentiment Analysis at Clause Level.
    Ting Lin*, Aixin Sun, and Yequan Wang. Knowledge and Information Systems (KAIS), 65(2): 517-541 (2023) NLP
  • Asking Clarifying Questions: to Benefit or to Disturb Users in Web Search?
    Jie Zou, Aixin Sun, Cheng Long∧, Mohammad Aliannejadi, Evangelos Kanoulas. Information Processing & Management (IP&M), 60 (2): 103176. 2023 IR
  • DOCoR: Document-level OpenIE with Coreference Resolution.
    Shan Jie Yong, Kuicai Dong, Aixin Sun. WSDM 2023: 1204-1207 (Demo paper) NLP
  • Syntactic Multi-view Learning for Open Information Extraction.
    Kuicai Dong, Aixin Sun, Jung-Jae Kim and Xiaoli Li. EMNLP 2022 NLP
  • CORT: A New Baseline for Comparative Opinion Classification by Dual Prompts.
    Yequan Wang, Hengran Zhang, Aixin Sun and Xuying Meng. EMNLP 2022 Findings NLP


  • May 2023. Congratulations to Wang Jing, Yubo, Xinze, Jianzhu, Wu Yin, Chen Chen for paper acceptance to ACL
  • Apr 2023. Aixin shares his understanding on RecSys with Prof Yang's group at Georgetown University
  • Apr 2023. Congratulations to Chunyang for paper acceptance to SIGIR
  • Apr 2023. Congratulations to Zhang Hao and Zou Xin for paper accetance to TPAMI and TORS respectively
  • Nov 2022. Congratulations to Lin Ting and Zou Jie for paper acceptance to KAIS and IP&M respectively

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