I am an assistant professor in the Department of Computer Science, Aalborg University. I obtained the Ph.D. degree from Aalborg University (Department of Computer Science) in 2022 (advised by Prof. Hua Lu). My research generally concerns graph search, spatial database, data management, and data science. Recently, I have been working on Queries for Indoor Location-based Services (LBSs). My current work focuses on data analysis related to moving-object mobility.

News

[2023-09] I joined Aalborg University.
[2023-04] One paper is accepted by TKDE.
[2022-05] I joined Roskilde University.
[2022-04] I successfully defensed my thesis at Aalborg University.
[2022-01] Our demo paper is accepted by ICDE.

Selected Recent Publications

• T. Liu, H. Li, H. Lu, M. A. Cheema, and H. K. Chan. Contact Tracing over Uncertain Indoor Positioning Data. accepted by TKDE, 2023. (CCF A)
• T. Liu, Z. Feng, H. Li, H. Lu, L. Shou, and J. Xu. IKAROS: An Indoor Keyword-Aware Routing System. ICDE, 2022: 3182-3185. (Demo Paper). (CCF A)
• T. Liu, Z. Feng, H. Li, H. Lu, M. A. Cheema, H. Cheng, and J. Xu. Towards Indoor Temporal-variation aware Shortest Path Query. TKDE, 35(1): 998-1012 (2023). (CCF A)
• T. Liu, H. Li, H. Lu, M. A. Cheema, and L. Shou. Towards Crowd-aware Indoor Path Planning. PVLDB, 2021: 1365-1377. (CCF A)
• H. K. Chan, T. Liu, H. Li, and H. Lu. Time-Constrained Indoor Keyword-aware Routing. SSTD, 2021: 74-84. (Best paper nomination)
• T. Liu, H. Li, H. Lu, M. A. Cheema, and L. Shou. Indoor Spatial Queries: Modeling, Indexing, and Processing. EDBT, 2021: 181-192. (CCF B)
• T. Liu, Z. Feng, H. Li, H. Lu, M. A. Cheema, H. Cheng, and J. Xu. Shortest Path Queries for Indoor Venues with Temporal Variations. ICDE, 2020: 2014-2017. (CCF A)
• Z. Feng, T. Liu, H. Li, H. Lu, and L. Shou, J. Xu. Indoor Top-k Keyword-aware Routing Query. ICDE, 2020: 1213-1224. (CCF A)

Teaching

• Teaching assistant for Database Development, Aalborg University, 2019-2020.
• Supervisor for SW3, SW6, SW7 and BaIT4 groups, Aalborg University, 2019-2020.

Project

Data Management Foundations for Indoor LBS

Professional Services

Program committee member

• 2022: AAAI

Journal/Conference External Reviewer

• 2022: SIGKDD
• 2021: TKED, VLDB, SIGKDD, SIGSPATIAL
• 2020: ICDE, KDD, SIGSPATIAL, CIKM, MDM, DASFAA, IEEE BigData, TheWebConf
• 2019: KDD, CIKM, SIGSPATIAL

Contact

• Email: liutt@cs.aau.dk
• Tel: +45 50288578