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Dr. Sun Aixin is an Associate Professor and Associate Dean (Undergraduate Education) at the College of Computing and Data Science (CCDS), Nanyang Technological University (NTU), Singapore. He joined the college in 2005 and was the Associate Chair (Academic) from 2023 to 2024 and Assistant Chair from 2016 to 2023. 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, recommender systems, and NLP. He has published more than 200 papers in major international journals and conferences. According to Google Scholar, his papers have received more than 20,000 citations, with h-index 67.

Dr. Sun is an associate editor of ACM Transactions on Information Systems (TOIS), ACM Transactions on Intelligent Systems and Technology (TIST), ACM Transactions on Asian and Low-Resource Language Information Processing (TALLIP), Neurocomputing, and editorial board member of Journal of the Association for Information Science and Technology (JASIST). 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 short 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: N4-2B-102

Professional services

• Associate Editor and Editorial Board Member:
  • ACM Transactions on Information Systems (TOIS)
  • ACM Transactions on Intelligent Systems and Technology (TIST)
  • ACM Transactions on Asian and Low-Resource Language Information Processing (TALLIP)
  • Journal of the Association for Information Science and Technology (JASIST)
  • Neurocomputing
• Conference organization and PC members:
  • 2024: WWW (Search Track Co-Chair). Action Editor for ARR (ACL, EACL, NAACL), SIGIR (SPC, and PC for Perspectives Paper Track), RecSys (SPC), NeurIPS (AC for Datasets and Benchmarks Track)
  • 2023: EMNLP (Publication Chair), SIGIR (SPC, and PC for Perspectives Paper Track), WWW (SPC), IJCAI (AC), WSDM (DC Co-Chair), NeurIPS (AC for Datasets and Benchmarks Track), SIGIR-AP (SPC)
  • 2022: WWW (SPC), IJCAI (SPC), ECIR, SIGIR(SPC, and PC for Perspectives Paper Track), KDD (PC for Applied Data Science Track)

Recent papers

• Punctuation Restoration: A Case Study of BERT-Based Models' Task-Specific Excellence
  Qishuai Zhong and Aixin Sun. IEEE ICASSP 2025. NLP
• MMLONGBENCH-DOC: Benchmarking Long-context Document Understanding with Visualizations
  Yubo Ma, Yuhang Zang, Liangyu Chen, Meiqi Chen, Yizhu Jiao, Xinze Li, Xinyuan Lu, Ziyu Liu, Yan Ma, Xiaoyi Dong, Pan Zhang, Liangming Pan, Yu-Gang Jiang, Jiaqi Wang, Yixin Cao, and Aixin Sun. NeurIPS2024 D&B NLP IR
• SciAgent: Tool-augmented Language Models for Scientific Reasoning
  Yubo Ma, Zhibin Gou, Junheng Hao, Ruochen Xu, Shuohang Wang, Liangming Pan, Yujiu Yang, Yixin Cao, Aixin Sun. EMNLP 2024. Accepted NLP
• Right Tool, Right Job: Recommendation for Repeat and Exploration Consumption in Food Delivery
  Jiayu Li, Aixin Sun, Weizhi Ma, Peijie Sun and Min Zhang. RecSys 2024 Accepted RecSys
• Not All Videos Become Outdated: Short-Video Recommendation by Learning to Deconfound Release Interval Bias
  Lulu Dong, Guoxiu He and Aixin Sun. RecSys 2024 Accepted. RecSys
• Knowledge-Enhanced Conversational Recommendation via Transformer-based Sequential Modelling
  Jie Zou, Aixin Sun, Cheng Long, Evangelos Kanoulas. TOIS 2024. RecSys
• On Context Utilization in Summarization with Large Language Models
  Mathieu Ravaut, Aixin Sun, Nancy F. Chen, Shafiq Joty. ACL 2024. NLP IR
• Towards Verifiable Generation: A Benchmark for Knowledge-aware Language Model Attribution.
  Xinze Li, Yixin Cao, Liangming Pan, Yubo Ma, Aixin Sun. ACL 2024 Findings. NLP
• Parameter-Efficient Conversational Recommender System as a Language Processing Task
  Mathieu Ravaut, Hao Zhang, Lu Xu, Aixin Sun, Yong Liu. EACL 2024. NLP RecSys
• DiffuRec: A Diffusion Model for Sequential Recommendation
  Zhihao Li, Aixin Sun, Chenliang Li. ACM TOIS: 42(3), Article 66. May 2024. RecSys
• DP-GCN: Node Classification by Connectivity and Local Topology Structure on Real-World Network
  Zhe Chen, Aixin Sun. ACM TKDD. Accepted 2004. DM IR
• Large Language Model Is Not a Good Few-shot Information Extractor, but a Good Reranker for Hard Samples!
  Yubo Ma, Yixin Cao, Yong Ching Hong, Aixin Sun. EMNLP 2023 Findings. NLP IR
• Open Information Extraction via Chunks
  Kuicai Dong, Aixin Sun, Jung-jae Kim, Xiaoli Li. EMNLP 2023. NLP
• From Speculation Detection to Trustworthy Relational Tuples in Information Extraction.
  Kuicai Dong, Aixin Sun, Jung-jae Kim, Xiaoli Li. EMNLP 2023 Findings. NLP
• Dataset vs Reality: Understanding Model Performance from the Perspective of Information Need
  Mengying Yu, Aixin Sun. Journal of the Association for Information Science and Technology (JASIST). Accepted. IR
• MS-DETR: Natural Language Video Localization with Sampling Moment-Moment Interaction.
  Wang Jing, Aixin Sun, Hao Zhang and Xiaoli Li. ACL 2023. NLP
• Few-shot Event Detection: An Empirical Study and a Unified View.
  Yubo Ma, Zehao Wang, Yixin Cao and Aixin Sun. ACL 2023. NLP