1. "Analyzing and Modeling Users In Multiple Social Platforms", [Slides] presented in 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

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

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

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

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

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

Conference Organising Committee

• ACM SIGKDD Conference on Knowledge Discovery and Data Mining (SIGKDD) [2021] - Local Arrangement Chair

Conference Program Committee

• ACM International Conference on Web Search and Data Mining (WSDM) [2021]

• ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR) [2019, 2020, 2021]

• ACM International Conference on Information and Knowledge Management (CIKM) [2019]

• ACM Conference on User Modeling, Adaptation and Personalization (UMAP) (2019, 2020, 2021]

• IEEE International Conference on Data Mining (ICDM) [2020]

• SIAM International Conference on Data Mining (SDM) [2021]

• Pacific-Asia Conference on Knowledge Discovery and Data Mining (PAKDD) [2020, 2021]

• International Joint Conference on Natural Language Processing (ICJNLP) [2020]

• International Conference on Web and Social Media (ICWSM) [2020, 2021]

• Interactional Conference on Advances in Social Network Analysis and Mining (ASONAM) [2019, 2020]

• International Semantic Web Conference (ISWC) [2019]

Journal Reviewer

• ACM Transactions on Social Computing (TSC)

• IEEE Access

• User Modeling and User-Adapted Interaction (UMUAI)

• Social Network Analysis and Mining (SNAM)

Grant Reviewer