Dr Harry Kai-Ho Chan

BEng (HKUST), MPhil (HKUST), PhD (HKUST)

Information School

Lecturer in Data Science

h.k.chan@sheffield.ac.uk
+44 114 222 2638

Room C229, The Wave

Full contact details

Dr Harry Kai-Ho Chan
Information School
Room C229
The Wave
2 Whitham Road
Sheffield
S10 2AH

Profile

I joined the Information School as a Lecturer in Data Science in September 2022. Before coming to Sheffield, I worked as a Postdoc researcher on the project “Data Management for Indoor Location-based Services (LBS)” at Roskilde University, Denmark, from October 2020 to August 2022. I obtained my PhD degree in Computer Science and Engineering from The Hong Kong University of Science and Technology, Hong Kong.

University responsibilities

Interim Deputy Programme Coordinator, BSc Data Science (Semester 2, 2023 - 2024)
Department Employability Lead for Data Science (2022 - )

Research interests

My research interests include data mining and analytics, data science, and big data. My research concerns foundations for efficient information retrieval, data management and knowledge discovery from different types of data such as spatial data, spatio-textual data, and spatio-temporal data. In particular, I worked on the problems of query processing on spatio-textual data, spatial co-location pattern mining, and in the area of indoor location-based services (LBS). I am also interested in applying machine learning models in databases to improve the quality and query efficiency of spatial data.

I am interested in supervising PhD students in the following areas:

Data mining and analytics for big data
AI for databases
Spatial data management

Publications

Journal articles

Chan HK-H, Long C, Yan D, Wong RC-W & Lu H (2023) Fraction-score: a generalized support measure for weighted and maximal co-location pattern mining. IEEE Transactions on Knowledge and Data Engineering, 1-14. View this article in WRRO
Liu T, Li H, Lu H, Cheema MA & Chan HK-H (2023) Contact tracing over uncertain indoor positioning data. IEEE Transactions on Knowledge and Data Engineering, 35(10), 10324-10338. View this article in WRRO
Chan HK-H, Li H, Li X & Lu H (2022) Continuous social distance monitoring in indoor space. Proceedings of the VLDB Endowment, 15(7), 1390-1402.
Chan HK-H, Liu S, Long C & Wong RC-W (2021) Cost-Aware and Distance-Constrained Collective Spatial Keyword Query. IEEE Transactions on Knowledge and Data Engineering, 1-1.
Chan HK-H, Long C & Wong RC-W (2018) On Generalizing Collective Spatial Keyword Queries. IEEE Transactions on Knowledge and Data Engineering, 30(9), 1712-1726.
Kai-Ho Chan H, Liu T, Li H & Lu H () Time-Constrained Indoor Keyword-aware Routing: Foundations and Extensions. GeoInformatica.
Li H, Liu T, Chan HK-H & Lu H () Spatial data analysis for intelligent buildings: Awareness of context and data uncertainty. Frontiers in Big Data, 5.

Conference proceedings papers

Li X, Li H, Chan HK-H, Lu H & Jensen CS (2023) Data imputation for sparse radio maps in indoor positioning. 2023 IEEE 39th International Conference on Data Engineering (ICDE) (pp 2235-2248). Anaheim, CA, USA, 3 April 2023 - 3 April 2023. View this article in WRRO
Chan HK-H, Liu S, Long C & Wong RC-W (2022) Cost-Aware and Distance-Constrained Collective Spatial Keyword Query (Extended Abstract). 2022 IEEE 38th International Conference on Data Engineering (ICDE), 9 May 2022 - 12 May 2022.
Chan HK-H, Liu T, Li H & Lu H (2021) Time-Constrained Indoor Keyword-aware Routing. 17th International Symposium on Spatial and Temporal Databases
Chan HK-H, Long C, Yan D & Wong RC-W (2019) Fraction-Score: A New Support Measure for Co-location Pattern Mining. 2019 IEEE 35th International Conference on Data Engineering (ICDE), 8 April 2019 - 11 April 2019.
Chan HK-H, Long C & Wong RC-W (2019) On Generalizing Collective Spatial Keyword Queries (Extended Abstract). 2019 IEEE 35th International Conference on Data Engineering (ICDE), 8 April 2019 - 11 April 2019.
Chan HK-H, Long C & Wong RC-W (2017) Inherent-Cost Aware Collective Spatial Keyword Queries (pp 357-375)
Kai-Ho Chan H, Liu T, Li H, Lu H & Cheema MA () Contact Tracing over Uncertain Indoor Positioning Data (Extended Abstract). IEEE International Conference on Data Engineering

Teaching activities

INF114 - Communicating Data

INF217 - Databases and beyond

INF4000 - Data Visualisation

Professional activities and memberships

I serve as program committee member and reviewer for multiple international conferences and journals such as:

Program committee membership

Proceeding of the Very Large Data Base Endowment (VLDB)
SIGKDD Conference on Knowledge Discovery & Data Mining (KDD)
IEEE International Conference on Data Engineering (ICDE)
ACM Conference on Information and Knowledge Management (CIKM)
Pacific-Asia Conference on Knowledge Discovery and Data Mining (PAKDD)
IEEE International Conference on Big Data (IEEE BigData)
IEEE International Conference on Mobile Data Management (MDM)
International Symposium on Spatial and Temporal Databases (SSTD)

Journal Referee

International Journal on Very Large Data Bases (VLDBJ)
IEEE Transaction on Knowledge and Data Engineering (TKDE)
Journal of Distributed and Parallel Databases (DAPD)
Information Systems
GeoInformatica