Spatial-Temporal Crowdsourcing Group: Publications

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2022	Faster and Better Solution to Embed Lp Metrics by Tree Metrics Yuxiang Zeng, Yongxin Tong, Lei Chen SIGMOD 2022.
	HAP: An Efficient Hamming Space Index Based on Augmented Pigeonhole Principle Qiyu Liu, Yanyan Shen, Lei Chen SIGMOD 2022.
	Hu-Fu: Efficient and Secure Spatial Queries over Data Federation Yongxin Tong, Xuchen Pan, Yuxiang Zeng, Yexuan Shi, Chunbo Xue, Zimu Zhou, Xiaofei Zhang, Lei Chen, Yi Xu, Ke Xu, Weifeng Lv VLDB 2022.
	Crowdsourced Fact Validation for Knowledge Bases Libin Zheng, Peng Cheng, Lei Chen, Jianxing Yu, Xuemin Lin, Jian Yin ICDE 2022.
	Unified Route Planning for Shared Mobility: An Insertion-based Framework Yongxin Tong, Yuxiang Zeng, Zimu Zhou, Lei Chen, Ke Xu TODS 2022.
	Privacy-preserving worker allocation in crowdsourcing Libin Zheng, Lei Chen, Peng Cheng VLDBJ 2022.
	Maximizing the Utility in Location-Based Mobile Advertising Peng Cheng, Xiang Lian, Lei Chen, Siyuan Liu TKDE 2022.
2021	LHist: Towards Learning Multi-dimensional Histogram for Massive Spatial Data Qiyu Liu, Yanyan Shen, Lei Chen ICDE 2021.
	HST+: An Efficient Index for Embedding Arbitrary Metric Spaces Yuxiang Zeng, Yongxin Tong, Lei Chen ICDE 2021.
	Crowdrebate: An Effective Platform to Get more Rebate for Customers Wangze Ni, Nian Chen, Peng Cheng, Lei Chen, Xuemin Lin ICDE 2021.
	Centralized Routing for Bike-sharing Systems Libin Zheng, Lei Chen, Cyrus Shahabi TKDE 2021.
	Efficient Approximate Range Aggregation over Large-scale Spatial Data Federation Yexuan Shi, Yongxin Tong, Yuxiang Zeng, Zimu Zhou, Boling Ding, Lei Chen TKDE 2021.
	Privacy-Preserving Batch-based Task Assignment in Spatial Crowdsourcing with Untrusted Server Maocheng Li, Jiachuan Wang, Libin Zheng, Han Wu, Peng Cheng, Lei Chen, Xuemin Lin CIKM 2021.
	Efficiently Discovering Regions of Interest with User-Defined Score Function Qiyu Liu, Libin Zheng, Xiang Lian, Lei Chen DASFAA 2021.
2020	Stable Learned Bloom Filters for Data Streams Qiyu Liu, Libin Zheng, Yanyan Shen, Lei Chen VLDB 2020.
	Last-mile delivery made practical: An efficient route planning framework with theoretical guarantees Yuxiang Zeng, Yongxin Tong, Lei Chen VLDB 2020.
	The Simpler The Better: An Indexing Approach for Shared-Route Planning Queries Yuxiang Zeng, Yongxin Tong, Yuguang Song, Lei Chen VLDB 2020.
	Fair Task Assignment in Spatial Crowdsourcing Zhao Chen, Peng Cheng, Lei Chen, Xuemin Lin, Cyrus Shahabi VLDB 2020.
	Demand-Aware Route Planning for Shared Mobility Services Jiachuan Wang, Peng Cheng, Libin Zheng, Chao Feng, Lei Chen, Xuemin Lin, Zheng Wang VLDB 2020.
	Task Allocation in Dependency-aware Spatial Crowdsourcing Wangze Ni, Peng Cheng, Lei Chen, Xuemin Lin ICDE 2020.
	RIDE: A System for Generalized Region of Interest Discovery and Exploration Qiyu Liu, Libin Zheng, Lei Chen ICDE 2020.
	Spatial crowdsourcing: a survey Yongxin Tong, Zimu Zhou, Yuxiang Zeng, Lei Chen, Cyrus Shahabi The VLDB Journal 2020.
	Reducing Uncertainty of Schema Matching via Crowdsourcing with Accuracy Rates Chen Jason Zhang, Lei Chen, H. V. Jagadish, Mengchen Zhang, Yongxin Tong TKDE 2020.
	Two-sided Online Micro-Task Assignment in Spatial Crowdsourcing Yongxin Tong, Yuxiang Zeng, Boling Ding, Libin Wang, Lei Chen TKDE 2020.
2019	Cooperation-Aware Task Assignment in Spatial Crowdsourcing. Peng Cheng, Lei Chen, and Jieping Ye. ICDE 2019.
	Minimizing Maximum Delay of Task Assignment in Spatial Crowdsourcing. Zhao Chen, Peng Cheng, Yuxiang Zeng, and Lei Chen. ICDE 2019.
	A Queueing-Theoretic Framework for Vehicle Dispatching in Dynamic Car-Hailing (Short Paper). Peng Cheng, Chao Feng, Lei Chen, and Zheng Wang. ICDE 2019.
	Maximizing the Utility in Location-Based Mobile Advertising (Short Paper). Peng Cheng, Xiang Lian, Lei Chen, and Siyuan Liu. ICDE 2019.
	Auction-based Order Dispatch and Pricing in Ridesharing. Libin Zheng, Peng Cheng, and Lei Chen. ICDE 2019.
	Quality-Assured Synchronized Task Assignment in Crowdsourcing Jiayang Tu, Peng Cheng, Lei Chen TKDE 2019.
	Probabilistic Maximum Range-Sum Queries on Spatial Database Qiyu Liu, Xiang Lian, Lei Chen SIGSPATIAL 2019.
	Social-Aware Optimal Electric Vehicle Charger Deployment on Road Network Qiyu Liu, Yuxiang Zeng, Lei Chen, Xiuwen Zheng SIGSPATIAL 2019.
2018	Dynamic Pricing in Spatial Crowdsourcing: A Matching-Based Approach Yongxin Tong, Libin Wang, Zimu Zhou, Lei Chen, Bowen Du, Jieping Ye SIGMOD 2018.
	Worker Recommendation for Crowdsourced Q&A Services: A Triple-Factor Aware Approach Zheng Liu, Lei Chen VLDB 2018.
	A Unified Approach to Route Planning for Shared Mobility Yongxin Tong, Yuxiang Zeng, Zimu Zhou, Lei Chen, Jieping Ye, Ke Xu VLDB 2018.
	Order Dispatch in Price-aware Ridesharing Libin Zheng, Lei Chen, Jieping Ye VLDB 2018.
	An Experimental Evaluation of Task Assignment in Spatial Crowdsourcing Peng Cheng, Xun Jian, Lei Chen VLDB 2018.
	Latency-oriented Task Completion via Spatial Crowdsourcing Yuxiang Zeng, Yongxin Tong, Lei Chen, Zimu Zhou ICDE 2018.
	Multi-campaign Oriented Spatial Crowdsourcing Libin Zheng, Lei Chen ICDE 2018.
	Realtime Traffic Speed Estimation with Sparse Crowdsourced Data Zheng Liu, Lei Chen, Yongxin Tong ICDE 2018.
	FROG: A Fast and Reliable Crowdsourcing Framework Peng Cheng, Xiang Lian, Xun Jian, Lei Chen TKDE 2018.
	SLADE: A Smart Large-Scale Task Decomposer in Crowdsourcing Yongxin Tong, Lei Chen, Zimu Zhou, H. V. Jagadish, Lidan Shou, Weifeng Lv TKDE 2018.
	DLTA: A Framework for Dynamic Crowdsourcing Classification Tasks. Libin Zheng and Lei Chen. TKDE 2018.
	Multi-campaign Oriented Spatial Crowdsourcing (Journal Extension). Libin Zheng and Lei Chen. TKDE 2018.
	Effective Solution for Labeling Candidates with a Proper Ration for Efficient Crowdsourcing. Zhao Chen, Peng Cheng, Chen Zhang, and Lei Chen. DASFAA 2018.
2017	Utility-Aware Ridesharing on Road Networks. Peng Cheng, Hao Xin, and Lei Chen. SIGMOD 2017.
	Feedback-Aware Social Event-Participant Arrangement Jieying She, Yongxin Tong, Lei Chen, Tianshu Song SIGMOD 2017.
	Spatial Crowdsourcing: Challenges, Techniques, and Applications Yongxin Tong, Lei Chen, Cyrus Shahabi VLDB 2017.
	Flexible Online Task Assignment in Real-Time Spatial Data Yongxin Tong, Libin Wang, Zimu Zhou, Bolin Ding, Lei Chen, Jieping Ye, Ke Xu VLDB 2017.
	Prediction-based Task Assignment in Spatial Crowdsourcing. Peng Cheng, Xiang Lian, Lei Chen, and Cyrus Shahabi. ICDE 2017.
	Tuning crowdsourced human computation. Chen Cao, Jiayang Tu, Zheng Liu, Lei Chen, and H. V. Jagadish. ICDE 2017.
	The Simpler The Better: A Unified Approach to Predicting Original Taxi Demands based on Large-Scale Online Platforms Yongxin Tong, Yuqiang Chen, Zimu Zhou, Lei Chen, Jie Wang, Qiang Yang, Jieping Ye, Weifeng Lv KDD 2017.
	Maximizing acceptance in rejection-aware spatial crowdsourcing. Libin Zheng and Lei Chen. TKDE 2017.
2016	Online Minimum Matching in Real-Time Spatial Data: Experiments and Analysis Yongxin Tong, Jieying She, Bolin Ding, Lei Chen, Tianyu Wo, Ke Xu VLDB 2016.
	Online mobile Micro-Task Allocation in spatial crowdsourcing Yongxin Tong, Jieying She, Bolin Ding, Libin Wang, Lei Chen ICDE 2016.
	Mutual benefit aware task assignment in a bipartite labor market Liu Zheng, Lei Chen ICDE 2016.
	Task Assignment on Multi-Skill Oriented Spatial Crowdsourcing. Peng Cheng, Xiang Lian, Lei Chen, Jinsong Han, and Jizhong Zhao. TKDE 2016.
	Spatial Crowdsourcing: Challenges and Opportunities Lei Chen, Cyrus Shahabi IEEE Data Engineering Bulletin 2016.
2015	Reliable Diversity-Based Spatial Crowdsourcing by Moving Workers. Peng Cheng, Xiang Lian, Zhao Chen, Rui Fu, Lei Chen, Jinsong Han, and Jizhong Zhao. VLDB 2015.
	Utility-Aware Social Event-Participant Planning Jieying She, Yongxin Tong, Lei Chen ICDE 2015.
	Cleaning uncertain data with a noisy crowd Chen Jason Zhang, Lei Chen, Yongxin Tong, Zheng Liu ICDE 2015.
	Conflict-aware event-participant arrangement Jieying She, Yongxin Tong, Lei Chen, Caleb Chen Cao ICDE 2015.
	Data-driven crowdsourcing: Management, mining, and applications Lei Chen, Dongwon Lee, Tova Milo ICDE 2015.
	CrowdTC: Crowdsourced Taxonomy Construction Rui Meng, Yongxin Tong, Lei Chen, Caleb Chen Cao ICDM 2015.
2014	gMission: a general spatial crowdsourcing platform. Zhao Chen, Rui Fu, Ziyuan Zhao, Zheng Liu, Leihao Xia, Lei Chen, Peng Cheng, Caleb Chen Cao, Yongxin Tong, and Chen Jason Zhang. VLDB 2014.
	Where To: Crowd-Aided Path Selection Chen Jason Zhang, Yongxin Tong, Lei Chen VLDB 2014.
	CrowdCleaner: Data cleaning for multi-version data on the web via crowdsourcing Yongxin Tong, Caleb Chen Cao, Chen Jason Zhang, Yatao Li, Lei Chen ICDE 2014.
	TCS: efficient topic discovery over crowd-oriented service data Yongxin Tong, Caleb Chen Cao, Lei Chen KDD 2014.
	From labor to trader: opinion elicitation via online crowds as a market Caleb Chen Cao, Lei Chen, H. V. Jagadish KDD 2014.
	Trip Planner Over Probabilistic Time-Dependent Road Networks. Xiang Lian, Lei Chen TKDE 2014.