• "Reimagining AI for Online Trust & Safety: Multimodal Approaches to Safer and More Inclusive Digital Communication", presented in University of New South Wales (UNSW), Australia, April 2025

• "The Future of AI in Online Safety", presented in Lee Kuan Yew School of Public Policy, Singapore, as part of Online Safety Forum'24, December 2024 [Slides]

• "Online Trust and Safety Series: Leveraging Retrieval-Augmented Generation (RAG) Systems for Content Moderation", presented in Singapore Data Science Consortium, Singapore, November 2024 [Slides]

• "Online Trust & Safety Series: Countering Online Hate Speech with AI", presented in the following events/institutions [Slides]:

  • Home Team Science & Technology Agency (HTX), Singapore, October 2024

  • Korea Advanced Institute of Science & Technology (KAIST), South Korea, September 2024

  • Sungkyunkwan University, South Korea, September 2024

  • DSO National Laboratories, Singapore, September, 2024

• "Online Trust & Safety Series: AI and the Ethics of Information Regulation for Public Service", presented in IPOS International, Transforming Public Service with the Power of Artificial Intelligence (AI), Singapore, September 2024. [Slides]:

• "Navigating the New Frontier: Ethical Challenges in the Age of Generative AI", presented in National Library Board, My Digital Life Series, Virtual, May 2024. [Slides]

• "Guardians of the Digital Space: AI’s Role in Combatting Online Hate",  presented in the following events/institutions [Slides]:

  • Gender, Technology, and Digital Cultures in the Middle East Conference, Qatar Doha, February 2024

  • Qatar Computing Research Institute, Qatar, February 2024  

  • A*Star CATOS, Singapore, December 2023 

  • IJCAI-AiOfAi 2023 (Invited Keynote), China Macau, August 2023 

• "Hateful Content Moderation with AI - Challenges & Opportunities in Singapore and Southeast Asia", presented at TSPA APAC Summit, Singapore, October 2023 [Slides]

• "Hateful Content Moderation with AI", presented in the following events/institutions [Slides]:

  • Singapore Data Science Consortium - Industry Demo Day, Singapore, July 2023 

  • DSO National Laboratories - World of Science (AI), Singapore, May 2023 

  • Dalhousie University, Virutal, March 2023

  • East China Normal University, Virtual, November 2022 

• "Combatting Weaponization of the Internet with AI", WAIC - World Artificial Intelligence Conference x Singapore Week of Innovation and Technology (SWITCH), Virtual, September 2022 [Slides]

• "Multimodal Hateful Meme Detection", Google Jigsaw, Virtual, April 2022 [Slides]

• "Perils and Promises of Automated Hate Speech Detection", presented in the following events/institutions:

  • Software AI Lab, Vietnam, Februrary 2022

  • KDD Singapore Chapter, Singapore, January 2022 

  • Toulouse University, France, November 2021

  • IIIT (Delhi)-LCS2, India, July 2021 

• "Disentangling Hate in Online Memes", DSO National Laboratories, Singapore, October 2021

• "Online Misbehaviors and Disinformation Mining", DSO National Laboratories, Singapore, June 2021

• "Analyzing and Modeling Users In Multiple Social Platforms", [Slides] presented in the following events/ institutions:

  • National Chiao Tung University, Taiwan, December 2019

  • Vietnam National University (VNU),  Vietnam Hanoi, July 2019

  • Lee Kuan Yew Centre for Innovative Cities (LKYCIC), Singapore, May 2019 

  • Southeast University, China Nanjing, May 2019

  • University of Electronic Science and Technology of China (UESTC), China Chengdu, May 2019

• "Discovering Hidden Topical Hubs and Authorities in Online Social Networks",  Ministry of Home Affairs Research Community-of-Practice (CoP) forum, Singapore, February 2019 [Slides]

• “Smart Cities for Smart Citizens”, Singapore Polytechnic, Young Analytic Programme, Singapore, September 2018. [Slides]

• “Resiliency Measures for Singapore Train Transportation Network”, Land Transport Authority (LTA),  Singapore, June 2016. 

• “Measuring Centralities for Transportation Networks Beyond Structures”, DSO National Laboratories & Prime Minister's Office Singapore (PMO), Singapore, May 2016. 

• “Sentiment Diffusion and Friendship Maintenance in Online Social Networks”, DSO National Laboratories, Singapore May 2015.

Media Interviews

• Interview with Mediacorp Channel News Asia (CNA) Singapore's Tonight, "New guidelines launched to boost resilience of cloud services and data centres", February 2025

• Interview with Rappler, "Southeast Asia voters grapple with explosion of AI images", December 2024

• Interview with Carnegie Endowment for International Peace, "Understanding the Information Environment: Insights from the Majority World", December 2024

• Interview with The Straits Times, "What can you do if you are the target of deepfake nudes?", December 2024

• Interview with Mediacorp Channel News Asia (CNA), "Singapore proposes law to ban deepfakes during elections", September 2024

• Interview with Channel 8 news (in Mandarin),  "Government amends bill to safeguard online advertising integrity during elections", September 2024

• Interview with The Straits Times, "Bill to combat deepfakes during election timely despite challenges: Analysts”, September 2024

• Interview with Mediacorp Channel News Asia (CNA), "AI talent, knowledge to be boosted with new initiatives", March 2024

• Interview with Mediacorp Channel 5 News Tonight, "Singapore launches AI Verify Foundation", June 2023

• Interview with Mediacorp Channel 8 焦点 (in Mandarin),  "Will TikTok be banned in US?", March 2023.

• Interview with South China Morning Post (SCMP), "TikTok bans: will Asia follow West’s lead as US turns the screws on China-linked app?", March 2023

• Interview with Channel News Asia (CNA), "TikTok can be used on Singapore government-issued devices only on a 'need-to' basis", March 2023

• Interview with Straits Times, "S’pore couple holds metaverse wedding as more consumers, businesses enter Web 3.0", September 2022

• Interview with Input Magazine, "Have researchers cracked the code to TikTok virality?", January 2022

• Live radio interview with CBC The Morning Edition, "Analysing Online Xenophobic Behaviours against Asian Communities during Covid-19 Pandemic", August 2021.

Conference Organising Committee

• Diversity & Inclusion Chair, Conference on Empirical Methods in Natural Language Processing (EMNLP), 2025

• Website Chair, Conference of the Asian Chapter of the Association for Computational Linguistics (AACL), 2025

• Proceeding Chair, The Web Conference (WWW), 2024

• Reviewer Mentoring Chair, Conference on Empirical Methods in Natural Language Processing (EMNLP), 2023

• Social Media and Publicity Co-Chair, ACM SIGKDD Conference on Knowledge Discovery and Data Mining (SIGKDD), 2021 

• PhD Forum and Poster Track Co-Chair, Interactional Conference on Advances in Social Network Analysis and Mining (ASONAM), 2021

Conference Program Committee / Area Chair

• AAAI Conference on Artificial Intelligence (AAAI), 2022 - Present

• Annual Meeting of the Association for Computational Linguistics (ACL) [Area Chair], 2021 - Present

• ACM SIGKDD Conference on Knowledge Discovery and Data Mining (SIGKDD), 2021 - Present

• ACM International Conference on Web Search and Data Mining (WSDM), 2021 - Present

• ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR), 2019 -  Present

• ACM International Conference on Information and Knowledge Management (CIKM), 2019, 2023

• ACM Conference on User Modeling, Adaptation and Personalization (UMAP), 2019 - Present

• Conference on Empirical Methods in Natural Language Processing (EMNLP) [Area Chair], 2023

• Conference of the European Chapter of the Association for Computational Linguistics (EACL), 2023

• Conference of the Asia-Pacific Chapter of the Association for Computational Linguistics (AACL), 2023

• IEEE International Conference on Data Mining (ICDM), 2020 - 2021

• SIAM International Conference on Data Mining (SDM), 2021 - Present

• Pacific-Asia Conference on Knowledge Discovery and Data Mining (PAKDD), 2020 - Present

• International Joint Conference on Artificial Intelligence (IJCAI) [Area Chair], 2025 - Present

• International Conference on Database Systems for Advanced Applications (DASFAA). 2022

• International Joint Conference on Natural Language Processing (ICJNLP), 2020 - 2023

• International Conference on Web and Social Media (ICWSM), 2020 - Present

• Interactional Conference on Advances in Social Network Analysis and Mining (ASONAM), 2019 - Present

• International Semantic Web Conference (ISWC), 2019

Journal Reviewer/Editorial Board

• Associate Editor, IEEE Transactions of Computational Social Systems (TCSS), 2024 - Present

• Associate Editor, Social Network Analysis and Mining (SNAM), 2020 - 2022

• Area Chair, ACL Rolling Review (ARR), 2024 - Present

• Reviewer, ACM Transactions on Asian Language Information Processing (TALIP)

• Reviewer,  ACM Communications (CACM)

• Reviewer, ACM Transactions on Social Computing (TSC)

• Reviewer, IEEE Access

• Reviewer, IEEE/ACM Transactions on Audio Speech and Language Processing

• Reviewer, IEEE Transactions on Engineering Management

• Reviewer, IEEE Transactions on Neural Networks and Learning Systems

• Reviewer, Natural Language Engineering

• Reviewer, Neurocomputing

• Reviewer, User Modeling and User-Adapted Interaction (UMUAI)

• Reviewer, Scientific Reports - Nature

Other Professional Services