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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 15,000 citations, with h-index 56.

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: SIGIR (SPC), WWW (SPC), IJCAI (AC)
  • 2022: WWW (SPC), IJCAI (SPC), ECIR, SIGIR(SPC), SIGIR (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

• From Counter-intuitive Observations to a Fresh Look at Recommender System. [Draft] arXiv:2210.04149
  Aixin Sun RecSys Here is a short summary
• A Re-visit of the Popularity Baseline in Recommender Systems.
  Yitong Ji, Aixin Sun, Jie Zhang, and Chenliang Li. SIGIR 2020 (Short paper) RecSys
• A Critical Study on Data Leakage in Recommender System Offline Evaluation.
  Yitong Ji, Aixin Sun, Jie Zhang, and Chenliang Li. Accepted in ACM TOIS.RecSys
• Do Loyal Users Enjoy Better Recommendations? Understanding Recommender Accuracy from a Time Perspective.
  Yitong Ji, Aixin Sun, Jie Zhang, and Chenliang Li. ICTIR 2022 RecSys

Survey papers

• A Survey on Neural Open Information Extraction: Current Status and Future Directions.
  Shaowen Zhou, Bowen Yu, Aixin Sun, Cheng Long, Jingyang Li, and Jian Sun. IJCAI 2022 NLP
• The Elements of Temporal Sentence Grounding in Videos: A Survey and Future Directions.
  Hao Zhang, Aixin Sun, Wei Jing, and Joey Tianyi Zhou. IR NLP CV
• A Survey on Deep Learning for Named Entity Recognition. [500+ Citations]
  Jing Li, Aixin Sun, Jianglei Han, and Chenliang Li. TKDE 34(1): 50-70 (2022). NLP IR
• Deep Learning based Recommender System: A Survey and New Perspectives [2000+ Citations]
  Shuai Zhang, Lina Yao, Aixin Sun, and Yi Tay. ACM Computing Surveys. Feb 2019 RecSys
• A Survey of Location Prediction on Twitter [200+ Citations]
  Xin Zheng, Jialong Han, Aixin Sun. IEEE TKDE. 30(9): 1652-1671 Twitter POI

Recent papers

• 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
• An Embarrassingly Simple Model for Dialogue Relation Extraction.
  Fuzhao Xue, Aixin Sun, Hao Zhang, Jinjie Ni, Eng Siong Chng. ICASSP 2022 NLP
• Aspect-based Sentiment Analysis through EDU-level Attentions.
  Ting Lin, Aixin Sun, Yequan Wang. PAKDD 2022 NLP
• 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