2023

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S2TUL: A Semi-Supervised Framework for Trajectory-User Linking
Liwei Deng | Hao Sun | Yan Zhao | Shuncheng Liu | Kai Zheng
Proceedings of the Sixteenth ACM International Conference on Web Search and Data Mining, WSDM 2023, Singapore, 27 February 2023 - 3 March 2023

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Adversarial Autoencoder for Unsupervised Time Series Anomaly Detection and Interpretation
Xuanhao Chen | Liwei Deng | Yan Zhao | Kai Zheng
Proceedings of the Sixteenth ACM International Conference on Web Search and Data Mining, WSDM 2023, Singapore, 27 February 2023 - 3 March 2023

2022

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Efficient and Effective Similar Subtrajectory Search: A Spatial-aware Comprehension Approach
Liwei Deng | Hao Sun | Rui Sun | Yan Zhao | Han Su
2022 Volume 13 Issue 3

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HeGA: Heterogeneous Graph Aggregation Network for Trajectory Prediction in High-Density Traffic
Shuncheng Liu | Xu Chen | Ziniu Wu | Liwei Deng | Han Su | Kai Zheng
Proceedings of the 31st ACM International Conference on Information & Knowledge Management, Atlanta, GA, USA, October 17-21, 2022

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Task Assignment with Federated Preference Learning in Spatial Crowdsourcing
Jiaxin Liu | Liwei Deng | Hao Miao | Yan Zhao | Kai Zheng
Proceedings of the 31st ACM International Conference on Information & Knowledge Management, Atlanta, GA, USA, October 17-21, 2022

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Efficient Trajectory Similarity Computation with Contrastive Learning
Liwei Deng | Yan Zhao | Zidan Fu | Hao Sun | Shuncheng Liu | Kai Zheng
Proceedings of the 31st ACM International Conference on Information & Knowledge Management, Atlanta, GA, USA, October 17-21, 2022

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Outlier Detection for Streaming Task Assignment in Crowdsourcing
Yan Zhao | Xuanhao Chen | Liwei Deng | Tung Kieu | Chenjuan Guo | Bin Yang | Kai Zheng | Christian S. Jensen
WWW '22: The ACM Web Conference 2022, Virtual Event, Lyon, France, April 25 - 29, 2022

2021

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Community-based influence maximization in location-based social network
Xuanhao Chen | Liwei Deng | Yan Zhao | Xiaofang Zhou | Kai Zheng
2021 Volume 24 Issue 6

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PeriodicMove: Shift-aware Human Mobility Recovery with Graph Neural Network
Hao Sun | Changjie Yang | Liwei Deng | Fan Zhou | Feiteng Huang | Kai Zheng
CIKM '21: The 30th ACM International Conference on Information and Knowledge Management, Virtual Event, Queensland, Australia, November 1 - 5, 2021