Publications

In publications, the author(s) marked with ‘#’ are/were my students, and the author(s) marked with ‘*’ represent the corresponding author(s).

International Conference

1. Lu Chen^#, Yunjun Gao*, Yuanliang Zhang^#, Sibo Wang, Xiaokui Xiao, and Baihua Zheng.

   Scalable Hypergraph-based Image Retrieval and Tagging System. [Paper]

   Proceedings of the 34th IEEE International Conference on Data Engineering (ICDE), pp. 257-268, 2018.

2. Jingwen Zhao^#, Yunjun Gao*, Gang Chen, and Rui Chen^#.

   Why-not Questions on Top-k Geo-Social Keyword Queries in Road Networks. [Paper]

   Proceedings of the 34th IEEE International Conference on Data Engineering (ICDE), pp. 965-976, 2018.

3. Lu Chen^#, Qilu Zhong^#, Xiaokui Xiao, Yunjun Gao*, Pengfei Jin^#, and Christian S. Jensen.

   Price-and-Time-Aware Dynamic Ridesharing. [Paper]

   Proceedings of the 34th IEEE International Conference on Data Engineering (ICDE), pp. 1061-1072, 2018.

4. Gang Chen, Jingwen Zhao^#, Yunjun Gao*, Lei Chen, and Rui Chen^#.

   Time-Aware Boolean Spatial Keyword Queries. [Paper]

   Proceedings of the 34th IEEE International Conference on Data Engineering (ICDE), pp. 1781-1782, 2018. (TKDE Poster)

5. Gang Chen, Keyu Yang^#, Lu Chen^#, Yunjun Gao*, Baihua Zheng, and Chun Chen.

   Metric Similarity Joins Using MapReduce. [Paper]

   Proceedings of the 34th IEEE International Conference on Data Engineering (ICDE), pp. 1787-1788, 2018. (TKDE Poster)

6. Xin Ding^#, Yuanliang Zhang^#, Lu Chen^#, Yunjun Gao*, and Baihua Zheng.

   Distributed k-Nearest Neighbor Queries in Metric Spaces. [Paper]

   Proceedings of the Second International Joint Conference on Web and Big Data (APWeb-WAIM) (APWeb-WAIM), pp. 236-252, 2018. (Best Paper Award)

7. Xin Ding^#, Yuanliang Zhang^#, Lu Chen^#, Keyu Yang^#, and Yunjun Gao*.

   Aggregate k Nearest Neighbor Queries in Metric Spaces. [Paper]

   Proceedings of the Second International Joint Conference on Web and Big Data (APWeb-WAIM) (APWeb-WAIM), pp. 317-333, 2018.

8. Xin Ding^#, Rui Chen^#, Lu Chen^#, Yunjun Gao*, and Christian S. Jensen.

   VIPTRA: Visualization and Interactive Processing on Big Trajectory Data. [Paper]

   Proceedings of the 19th IEEE International Conference on Mobile Data Management (MDM), pp. 290-291, 2018. (Demo)

9. Jingwen Zhao^#, Yunjun Gao*, Gang Chen, Christian S. Jensen, Rui Chen^#, and Deng Cai.

   Reverse Top-k Geo-Social Keyword Queries in Road Networks. [Paper]

   Proceedings of the 33rd IEEE International Conference on Data Engineering (ICDE), pp. 387-398, 2017.

10. Qing Liu^#, Yunjun Gao*, Linlin Zhou^#, and Gang Chen.

    IS2R: A System for Refining Reverse Top-k Queries. [Paper]

    Proceedings of the 33rd IEEE International Conference on Data Engineering (ICDE), pp. 387-398, 2017. (Demo)

11. Yunjun Gao*, Qing Liu^#, Gang Chen, Linlin Zhou^#, and Baihua Zheng.

    Finding Causality and Responsibility for Probabilistic Reverse Skyline Query Non-answers. [Paper]

    Proceedings of the 33rd IEEE International Conference on Data Engineering (ICDE), pp. 53-54, 2017. (TKDE Poster)

12. Qian Yan, Hao Huang, Yunjun Gao, Wei Lu, and Qinming He.

    Group-Level Influence Maximization with Budget Constraint. [Paper]

    Proceedings of the 22nd International Conference on Database Systems for Advanced Applications (DASFAA), pp. 625-641, 2017.

13. Fangshu Chen, Huaizhong Lin, Jianzhong Qi, Pengfei Li, and Yunjun Gao.

    Collective-k Optimal Location Selection. [Paper]

    Proceedings of the 15th International Symposium on Advances in Spatial and Temporal Databases (SSTD), pp. 339-356, 2017.

14. Lu Chen^#, Yunjun Gao*, Kai Wang^#, Christian S. Jensen, and Gang Chen.

    Answering Why-not Questions on Metric Probabilistic Range Queries. [Paper]

    Proceedings of the 32nd IEEE International Conference on Data Engineering (ICDE), pp. 767-778, 2016.

15. Dong Xie, Guanru Li, Bin Yao, Xiaokui Xiao, Yunjun Gao, and Minyi Guo.

    Practical Private Shortest Path Computation Based on Oblivious Storage. [Paper]

    Proceedings of the 32nd IEEE International Conference on Data Engineering (ICDE), pp. 361-372, 2016.

16. Xiaoye Miao^#, Yunjun Gao*, Baihua Zheng, Gang Chen, and Huiyong Cui^#.

    Top-k Dominating Queries on Incomplete Data (Extended Abstract). [Paper]

    Proceedings of the 32nd IEEE International Conference on Data Engineering (ICDE), pp. 1500-1501, 2016. (TKDE Poster)

17. Lu Chen^#, Yunjun Gao*, Gang Chen, and Haida Zhang^#.

    Metric All-k-Nearest-Neighbor Search (Extended Abstract). [Paper]

    Proceedings of the 32nd IEEE International Conference on Data Engineering (ICDE), pp. 1514-1515, 2016. (TKDE Poster)

18. Hao Huang, Song Wang, Shuangke Wu, Yunjun Gao, Wei Lu, Qinming He, and Shi Ying.

    Mining Arbitrary Shaped Clusters and Outputting a High Quality Dendrogram. [Paper]

    Proceedings of the 27th International Conference on Database and Expert Systems Applications (DEXA), pp. 153-168, 2016.

19. Shanshan Wu, Huaizhong Lin, Leong Hou U, Yunjun Gao, and Dongming Lu.

    Finding Frequent Items in Time Decayed Data Streams. [Paper]

    Proceedings of the 18th Asia-Pacific Web Conference on Web Technologies and Applications (APWeb), pp. 17-29, 2016.

20. Qian Yan, Hao Huang, Yunjun Gao, Chen Ying, Qingyang Hu, Tieyun Qian, and Qinming He.

    Modeling for Noisy Labels of Crowd Workers. [Paper]

    Proceedings of the 18th Asia-Pacific Web Conference on Web Technologies and Applications (APWeb), pp. 227-238, 2016.

21. Song Wang, Hao Huang, Yunjun Gao, Tieyun Qian, Liang Hong, and Zhiyong Peng.

    Fast Rare Category Detection Using Nearest Centroid Neighborhood. [Paper]

    Proceedings of the 18th Asia-Pacific Web Conference on Web Technologies and Applications (APWeb), pp. 383-394, 2016.

22. Lu Chen^#, Yunjun Gao*, Christian S. Jensen, Xinhan Li^#, Baihua Zheng, and Gang Chen.

    Indexing Metric Uncertain Data for Range Queries. [Paper]

    Proceedings of the ACM SIGMOD International Conference on Management of Data (SIGMOD), pp. 951-965, 2015.

23. Hui Li, Sourav S Bhowmick, Jiangtao Cui, Yunjun Gao, and Jianfeng Ma.

    GetReal: Towards Realistic Selection of Influence Maximization Strategies in Competitive Networks. [Paper]

    Proceedings of the ACM SIGMOD International Conference on Management of Data (SIGMOD), pp. 1525-1537, 2015. (Nomination for the Best Paper Award)

24. Lu Chen^#, Yunjun Gao*, Xinhan Li^#, Christian S. Jensen, and Gang Chen.

    Efficient Metric Indexing for Similarity Search.[Paper]

    Proceedings of the 31st IEEE International Conference on Data Engineering (ICDE), pp. 591-602, 2015. (One of the Best Papers)

25. Zhenguang Liu, Hao Huang, Qinming He, Kevin Chiew, and Yunjun Gao.

    Rare Category Exploration on Linear Time Complexity. [Paper]

    Proceedings of the 20th International Conference on Database Systems for Advanced Applications (DASFAA), pp. 37-54, 2015.

26. Hao Huang^#, Yunjun Gao, Kevin Chiew, Lei Chen, and Qinming He.

    Towards Effective and Efficient Mining of Arbitrary Shaped Clusters. [Paper]

    Proceedings of the 30th IEEE International Conference on Data Engineering (ICDE), pp. 28-39, 2014.

27. An Liu, Qing Li, Xiaofang Zhou, Lu Li, Guanfeng Liu, and Yunjun Gao.

    Rating Propagation in Web Services Reputation Systems: A Fast Shapley Value Approach. [Paper]

    Proceedings of the 19th International Conference on Database Systems for Advanced Applications (DASFAA), pp. 466-480, 2014.

28. Hao Huang^#, Yunjun Gao*, Lu Chen^#, Rui Li, Kevin Chiew, and Qinming He.

    Browse with a Social Web Directory. [Paper]

    Proceedings of the 36th International ACM SIGIR conference on research and development in Information Retrieval (SIGIR), pp. 865-868, 2013. (Short)

29. Yunjun Gao*, Lu Chen^#, Rui Li, and Gang Chen.

    Mapping Queries to Questions: Towards Understanding Users' Information Needs. [Paper]

    Proceedings of the 36th International ACM SIGIR conference on research and development in Information Retrieval (SIGIR), pp. 977-980, 2013. (Short)

30. Hao Huang^#, Yunjun Gao*, Kevin Chiew, Qinming He, and Lu Chen^#.

    Commodity Query by Snapping. [Paper]

    Proceedings of the 36th International ACM SIGIR conference on research and development in Information Retrieval (SIGIR), pp. 985-988, 2013. (Short)

31. Xiaoye Miao^#, Yunjun Gao*, Lu Chen^#, Gang Chen, Qing Li, and Tao Jiang.

    On Efficient k-Skyband Query Processing over Incomplete Data. [Paper]

    Proceedings of the 18th International Conference on Database Systems for Advanced Applications (DASFAA), pp. 424-439, 2013.

32. Huaizhong Lin, Fangshu Chen, Yunjun Gao, and Dongming Lu.

    OptRegion: Finding Optimal Region for Bichromatic Reverse Nearest Neighbor. [Paper]

    Proceedings of the 18th International Conference on Database Systems for Advanced Applications (DASFAA), pp. 146-160, 2013.

33. Xing Feng^#, Yunjun Gao*, Tao Jiang, Lu Chen^#, Xiaoye Miao^#, and Qing Liu^#.

    Parallel k-Skyband Computation on Multicore Architecture. [Paper]

    Proceedings of the 15th Asia-Pacific Web Conference on Web Technologies and Applications (APWeb), pp. 827-837, 2013.

34. Xing Feng^#, Xiang Zhao, Yunjun Gao, and Ying Zhang.

    Probabilistic Top-k Dominating Query over Sliding Windows. [Paper]

    Proceedings of the 15th Asia-Pacific Web Conference on Web Technologies and Applications (APWeb), pp. 782-793, 2013.

35. Tao Jiang, Yunjun Gao, Bin Zhang, Qing Liu^#, and Lu Chen^#.

    Reverse Top-k Group Nearest Neighbor Search. [Paper]

    Proceedings of the 15th International Conference on Web-Age Information Management (WAIM), pp. 429-439, 2013.

36. Xing Feng^#, Wenjie Zhang, Xiang Zhao, Ying Zhang, and Yunjun Gao.

    Probabilistic k-Skyband Operator over Sliding Windows.[Paper]

    Proceedings of the 15th International Conference on Web-Age Information Management (WAIM), pp. 190-202, 2013.

37. Qing Liu^#, Yunjun Gao*, Gang Chen, Qing Li, and Tao Jiang.

    On Efficient Reverse k-Skyband Query Processing. [Paper]

    Proceedings of the 17th International Conference on Database Systems for Advanced Applications (DASFAA), pp. 544-559, 2012.

38. Yafei Wang^#, Yunjun Gao*, Lu Chen^#, Gang Chen, and Qing Li.

    All-Visible-k-Nearest-Neighbor Queries. [Paper]

    Proceedings of the 23rd International Conference on Database and Expert Systems Applications (DEXA), pp. 392-407, 2012.

39. Yunjun Gao*, Jiacheng Yang^#, Gang Chen, Baihua Zheng, and Chun Chen.

    On Efficient Obstructed Reverse Nearest Neighbor Query Processing. [Paper]

    Proceedings of the 19th ACM SIGSPATIAL International Symposium on Advances in Geographic Information Systems (SIGSPATIAL GIS), pp. 191-200, 2011.

40. Gang Chen, He Bai, Lidan Shou, Ke Chen, and Yunjun Gao.

    UPS: Efficient Privacy Protection in Personalized Web Search. [Paper]

    Proceedings of the 34th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR), pp. 615-624, 2011.

41. Yunjun Gao*, Junfeng Hu, Gencai Chen, and Chun Chen.

    Finding the Most Desirable Skyline Objects. [Paper]

    Proceedings of the 15th International Conference on Database Systems for Advance Applications (DASFAA), pp. 116-122, 2010.

42. Nan Chen, Lidan Shou, Gang Chen, Ke Chen, and Yunjun Gao.

    B^s-tree: A Self-tuning Index of Moving Objects. [Paper]

    Proceedings of the 15th International Conference on Database Systems for Advance Applications (DASFAA), pp. 1-16, 2010.

43. Xi Guo, Yoshiharu Ishikawa, and Yunjun Gao.

    Direction-Based Spatial Skylines. [Paper]

    Proceedings of the 9th International ACM SIGMOD Workshop on Data Engineering for Wireless and Mobile (MobiDE), pp. 73-80, 2010.

44. Yunjun Gao* and Baihua Zheng.

    Continuous Obstructed Nearest Neighbor Queries in Spatial Databases. [Paper]

    Proceedings of the ACM SIGMOD International Conference on Management of Data (SIGMOD), pp. 577-590, 2009.

45. Yunjun Gao*, Baihua Zheng, Gencai Chen, Wang-Chien Lee, Ken C. K. Lee, and Qing Li.

    Visible Reverse k-Nearest Neighbor Queries. [Paper]

    Proceedings of the 25th International Conference on Data Engineering (ICDE), pp. 1203-1206, 2009. (Short)

46. Yunjun Gao*, Baihua Zheng, Wang-Chien Lee, and Gencai Chen.

    Continuous Visible Nearest Neighbor Queries. [Paper]

    Proceedings of the 12th International Conference on Extending Database Technology (EDBT), pp. 144-155, 2009.

47. Nan Chen, Lidan Shou, Gang Chen, Yunjun Gao, and Jinxiang Dong.

    Predictive Skyline Queries for Moving Objects. [Paper]

    Proceedings of the 14th International Conference on Database Systems for Advanced Applications (DASFAA), pp. 278-282, 2009.

48. Peipei Li, Xuegang Hu, Qianhui Liang, and Yunjun Gao.

    Concept Drifting Detection on Noisy Streaming Data in Random Ensemble Decision Trees. [Paper]

    Proceedings of the International Conference on Machine Learning and Data Mining (MLDM), pp. 236-250, 2009.

49. Yunjun Gao*, Jing Zhang, Gencai Chen, Qing Li, Shen Liu, and Chun Chen.

    Optimal-Nearest-Neighbor Queries. [Paper]

    Proceedings of the 24th International Conference on Data Engineering (ICDE),pp. 1454-1456, 2008. (Short)

50. Yunjun Gao*, Gencai Chen, Qing Li, Baihua Zheng, and Chun Li.

    Processing Mutual Nearest Neighbor Queries for Moving Object Trajectories. [Paper]

    Proceedings of the 9th International Conference on Mobile Data Management (MDM), pp. 116-123, 2008.

51. Yunjun Gao*, Gencai Chen, Qing Li, Chun Li, and Chun Chen.

    Constrained k-Nearest Neighbor Query Processing over Moving Object Trajectories. [Paper]

    Proceedings of the 13th International Conference on Database Systems for Advance Applications (DASFAA), pp. 19-22, 2008.

52. Yunjun Gao, Chun Li, Gencai Chen, Ling Chen, Xianta Jiang, and Chun Chen.

    Efficient k-Nearest-Neighbor Search Algorithms for Historical Moving Object Trajectories. [Paper]

    Journal of Computer Science and Technology (JCST), 22(2): 232-244, 2007.

53. Yunjun Gao*, Chun Li, Gencai Chen, Qing Li, and Chun Chen.

    Efficient Algorithms for Historical Continuous kNN Query Processing over Moving Object Trajectories. [Paper]

    Proceedings of the Joint Conf. of the 9th Asia-Pacific Web Conference and the 8th International Conf. on Web-Age Information Management (APWeb/WAIM), pp. 188-199, 2007.(49/554=8.84%)

54. Yunjun Gao*, Gencai Chen, Ling Chen, and Chun Chen.

    Parallelizing Progressive Computation for Skyline Queries in Multi-disk Environment. [Paper]

    Proceedings of the 17th International Conference on Database and Expert Systems Applications (DEXA), pp. 697-706, 2006.

55. Yunjun Gao*, Gencai Chen, Ling Chen, and Chun Chen.

    An I/O Optimal and Scalable Skyline Query Algorithm. [Paper]

    Proceedings of 23rd British National Conference on Databases (BNCOD), pp. 127-139, 2006.

56. Yunjun Gao*, Ling Chen, Gencai Chen, and Chun Chen.

    Efficient Parallel Processing for K-Nearest-Neighbor Search in Spatial Databases. [Paper]

    Proceedings of International Conference on Computational Science and its Applications (ICCSA), pp. 39-48, 2006.