Xin Cao

Senior Lecturer

I am currently an ARC DECRA Fellow and a senior lecturer in the School of Computer Science and Engineering (CSE) at The University of New South Wales (UNSW). I had worked as a lecturer in the Knowledge and Data Engineering research cluster within the School of Electronics, Electrical Engineering and Computer Science at Queen's University Belfast (QUB) from 2014 to 2016.

I did my PhD study in the School of Computer Science and Engineering, Nanyang Technological University (NTU) from August 2010 to October 2014, under the supervision of Prof. Gao Cong. Prior to joining NTU, I was a scientific assistant in the Center for Data-Intensive Systems (Daisy) in Aalborg University (AAU) from September 2008 to June 2010, under the supervision of Prof. Christian S. Jensen and Prof. Gao Cong. I obtained my Master and Bachelor degrees from the College of Computer Science and Technology, Zhejiang University, China, in June 2008 and June 2006, respectively.

Conference Papers
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Wang T; Xie X; Cao X; Pedersen TB; Wang Y; Xiao M, 2021, 'On efficient and scalable time-continuous spatial crowdsourcing', in Proceedings - International Conference on Data Engineering, pp. 1212 - 1223, http://dx.doi.org/10.1109/ICDE51399.2021.00109
2021
Chen X; Cao X; Zeng Y; Fang Y; Yao B, 2020, 'Optimal region search with submodular maximization', in IJCAI International Joint Conference on Artificial Intelligence, pp. 1216 - 1222
2020
Chen Y; Zhang J; Fang Y; Cao X; King I, 2020, 'Efficient community search over large directed graphs: An augmented index-based approach', in IJCAI International Joint Conference on Artificial Intelligence, pp. 3544 - 3550
2020
Hao Y; Cao X; Fang Y; Xie X; Wang S, 2020, 'Inductive link prediction for nodes having only attribute information', in IJCAI International Joint Conference on Artificial Intelligence, pp. 1209 - 1215
2020
Fang Y; Yang Y; Zhang W; Lin X; Cao X, 2020, 'Effective and efficient community search over large heterogeneous information networks', in Proceedings of the VLDB Endowment, pp. 854 - 867, http://dx.doi.org/10.14778/3380750.3380756
2020
Wang Y; Xiao C; Qin J; Cao X; Sun Y; Wang W; Onizuka M, 2020, 'Monotonic Cardinality Estimation of Similarity Selection: A Deep Learning Approach', in Proceedings of the ACM SIGMOD International Conference on Management of Data, pp. 1197 - 1212, http://dx.doi.org/10.1145/3318464.3380570
2020
Luo J; Cao X; Xie X; Qu Q; Xu Z; Jensen CS, 2020, 'Efficient attribute-constrained Co-located community search', in Proceedings - International Conference on Data Engineering, pp. 1201 - 1212, http://dx.doi.org/10.1109/ICDE48307.2020.00108
2020
Luo J; Cao X; Qu Q; Liu Y, 2019, 'Efficient search of the most cohesive co-located community in attributed networks', in Database systems for advanced applications : 24th International Conference, DASFAA 2019, Chiang Mai, Thailand, April 22-25, 2019, Proceedings, Part I (Series title: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Chiang Mai, Thailand, pp. 398 - 415, presented at DASFAA, Chiang Mai, Thailand, 22 April 2019 - 25 April 2019, http://dx.doi.org/10.1007/978-3-030-18576-3_24
2019
Chen X; Cao X; Xu Z; Zhang Y; Shang S; Zhang W, 2019, 'Accelerate MaxBRkNN Search by kNN estimation', in Proceedings - International Conference on Data Engineering, pp. 1730 - 1733, http://dx.doi.org/10.1109/ICDE.2019.00184
2019
Luo J; Xie X; Cao X; Qu Q, 2019, 'Best co-located community search in attributed networks', in International Conference on Information and Knowledge Management, Proceedings, pp. 2453 - 2456, http://dx.doi.org/10.1145/3357384.3358107
2019
Xu Z; Cao X; Gao X, 2018, 'Convergence analysis of gradient descent for eigenvector computation', in Lang J (ed.), IJCAI International Joint Conference on Artificial Intelligence, IJCAI, Stockholm, Sweden, pp. 2933 - 2939, presented at Twenty-Seventh International Joint Conference on Artificial Intelligence (IJCAI-18), Stockholm, Sweden, 13 July 2018 - 19 July 2018, http://dx.doi.org/10.24963/ijcai.2018/407
2018
Li Y; Wang G; Yuan Y; Cao X; Yuan L; Lin X, 2018, 'PrivTS: Differentially private frequent time-constrained sequential pattern mining', in Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), pp. 92 - 111, http://dx.doi.org/10.1007/978-3-319-91458-9_6
2018
Chen L; Shang S; Zhang Z; Cao X; Jensen CS; Kalnis P, 2018, 'Location-Aware Top-k Term Publish/Subscribe', in Proceedings - IEEE 34th International Conference on Data Engineering, ICDE 2018, IEEE, Paris, France, pp. 749 - 760, presented at 2018 IEEE 34th International Conference on Data Engineering (ICDE) (2018), Paris, France, 16 April 2018 - 19 April 2018, http://dx.doi.org/10.1109/ICDE.2018.00073
2018
Wang K; Cao X; Lin X; Zhang W; Qin L, 2018, 'Efficient computing of radius-bounded κ-cores', in Proceedings - IEEE 34th International Conference on Data Engineering, ICDE 2018, pp. 233 - 244, http://dx.doi.org/10.1109/ICDE.2018.00030
2018
Huang Z; Xiao X; Cao X, 2017, 'Databases theory and applications: 28th Australasian database conference, ADC 2017 Brisbane, QLD, Australia, september 25–28, 2017 proceedings', in Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Brisbane, QLD, Australia, pp. IV - V, presented at 28th Australasian Database Conference, ADC 2017, Brisbane, QLD, Australia, 25 September 2017 - 28 September 2017, http://dx.doi.org/10.1007/978-3-319-68155-9
2017
Yuan Q; Shang J; Cao X; Zhang C; Geng X; Han J, 2017, 'Detecting multiple periods and periodic patterns in event time sequences', in International Conference on Information and Knowledge Management, Proceedings, Singapore, pp. 617 - 626, presented at CIKM '17 Proceedings of the 2017 ACM on Conference on Information and Knowledge Management, Singapore, 06 November 2017 - 10 November 2017, http://dx.doi.org/10.1145/3132847.3133027
2017
Guo T; Cao X; Cong G; Lu J; Lin X, 2017, 'Distributed algorithms on exact Personalized PageRank', in Proceedings of the ACM SIGMOD International Conference on Management of Data, Chicago, Illinois, USA, pp. 479 - 494, presented at SIGMOD '17 Proceedings of the 2017 ACM International Conference on Management of Data, Chicago, Illinois, USA, 14 May 2017 - 19 May 2017, http://dx.doi.org/10.1145/3035918.3035920
2017
McConville R; Cao X; Liu W; Miller P, 2016, 'Accelerating Large Scale Centroid-based Clustering with Locality Sensitive Hashing', in Data Engineering (ICDE), 2016 IEEE 32nd International Conference on, Helsinki, Finland, pp. 649 - 660, presented at ICDE, Helsinki, Finland, 16 May 2016 - 20 May 2016, http://dx.doi.org/10.1109/ICDE.2016.7498278
2016
Zeng Y; Chen X; Cao X; Qin S; Cavazza M; Xiang Y, 2015, 'Optimal route search with the coverage of users' preferences', in IJCAI International Joint Conference on Artificial Intelligence, pp. 2118 - 2124
2015
Guo T; Cao X; Cong G, 2015, 'Efficient algorithms for answering the m-closest keywords query', in Proceedings of the ACM SIGMOD International Conference on Management of Data, pp. 405 - 418, http://dx.doi.org/10.1145/2723372.2723723
2015
Chen L; Cong G; Cao X; Tan KL, 2015, 'Temporal Spatial-Keyword Top-k publish/subscribe', in Proceedings - International Conference on Data Engineering, pp. 255 - 266, http://dx.doi.org/10.1109/ICDE.2015.7113289
2015
Cao X; Chen L; Cong G; Guan J; Phan NT; Xiao X, 2013, 'KORS: Keyword-aware optimal route search system', in Proceedings - International Conference on Data Engineering, pp. 1340 - 1343, http://dx.doi.org/10.1109/ICDE.2013.6544939
2013
Chen L; Cong G; Cao X, 2013, 'An efficient query indexing mechanism for filtering geo-textual data', in Proceedings of the ACM SIGMOD International Conference on Management of Data, pp. 749 - 760, http://dx.doi.org/10.1145/2463676.2465328
2013
Cao X; Chen L; Cong G; Jensen CS; Qu Q; Skovsgaard A; Wu D; Yiu ML, 2012, 'Spatial keyword querying', in Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), pp. 16 - 29, http://dx.doi.org/10.1007/978-3-642-34002-4_2
2012
Lu H; Cao X; Jensen CS, 2012, 'A foundation for efficient indoor distance-aware query processing', in Proceedings - International Conference on Data Engineering, pp. 438 - 449, http://dx.doi.org/10.1109/ICDE.2012.44
2012
Cao X; Cong G; Jensen CS; Ooi BC, 2011, 'Collective spatial keyword querying', in Proceedings of the ACM SIGMOD International Conference on Management of Data, pp. 373 - 384, http://dx.doi.org/10.1145/1989323.1989363
2011
Cao X; Cong G; Cui B; Jensen CS, 2010, 'A generalized framework of exploring category information for question retrieval in community question answer archives', in Proceedings of the 19th International Conference on World Wide Web, WWW '10, pp. 201 - 210, http://dx.doi.org/10.1145/1772690.1772712
2010
Cao X; Cong G; Cui B; Jensen CS; Zhang C, 2009, 'The use of categorization information in language models for question retrieval', in International Conference on Information and Knowledge Management, Proceedings, pp. 265 - 274, http://dx.doi.org/10.1145/1645953.1645989
2009
Journal articles
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Zhao S; Cao X, 2020, 'Multiple-user closest keyword-set querying in road networks', Information Sciences, vol. 509, pp. 133 - 149, http://dx.doi.org/10.1016/j.ins.2019.09.009
2020
Wang K; Wang S; Cao X; Qin L, 2020, 'Efficient Radius-bounded Community Search in Geo-social Networks', IEEE Transactions on Knowledge and Data Engineering, http://dx.doi.org/10.1109/TKDE.2020.3040172
2020
Xu Z; Ke Y; Cao X; Zhou C; Wei P; Gao X, 2020, 'A unified linear convergence analysis of k-SVD', Memetic Computing, vol. 12, pp. 343 - 353, http://dx.doi.org/10.1007/s12293-020-00315-4
2020
Li Y; Cao X; Yuan Y; Wang G, 2019, 'PrivSem: Protecting location privacy using semantic and differential privacy', World Wide Web, vol. 22, pp. 2407 - 2436, http://dx.doi.org/10.1007/s11280-019-00682-0
2019
Zhang D; Li Y; Cao X; Shao J; Shen HT, 2018, 'Augmented keyword search on spatial entity databases', VLDB Journal, vol. 27, pp. 225 - 244, http://dx.doi.org/10.1007/s00778-018-0497-6
2018
Su S; Zhao S; Cheng X; Bi R; Cao X; Wang J, 2017, 'Group-based collective keyword querying in road networks', Information Processing Letters, vol. 118, pp. 83 - 90, http://dx.doi.org/10.1016/j.ipl.2016.10.008
2017
Choudhury FM; Shane Culpepper J; Sellis T; Cao X, 2016, 'Maximizing bichromatic reverse spatial and textual k nearest neighbor queries', Proceedings of the VLDB Endowment, vol. 9, pp. 456 - 467, http://dx.doi.org/10.14778/2904121.2904122
2016
Cao X; Cong G; Guo T; Jensen CS; Ooi BC, 2015, 'Efficient processing of spatial group keyword queries', ACM Transactions on Database Systems, vol. 40, http://dx.doi.org/10.1145/2772600
2015
Cao X; Cong G; Jensen CS; Yiu ML, 2014, 'Retrieving regions of interest for user exploration', Proceedings of the VLDB Endowment, vol. 7, pp. 733 - 744, http://dx.doi.org/10.14778/2732939.2732946
2014
Chen L; Cui Y; Cong G; Cao X, 2014, 'SOPS: A system for efficient processing of spatial-keyword publish/subscribe', Proceedings of the VLDB Endowment, vol. 7, pp. 1601 - 1604, http://dx.doi.org/10.14778/2733004.2733040
2014
Cao X; Chen L; Cong G; Xiao X, 2012, 'Keyword-aware optimal route search', Proceedings of the VLDB Endowment, vol. 5, pp. 1136 - 1147, http://dx.doi.org/10.14778/2350229.2350234
2012
Cao X; Cong G; Cui B; Jensen CS; Yuan Q, 2012, 'Approaches to exploring category information for question retrieval in community question-answer archives', ACM Transactions on Information Systems, vol. 30, http://dx.doi.org/10.1145/2180868.2180869
2012
Cao X; Cong G; Jensen CS; Ng JJ; Ooi BC; Phan NT; Wu D, 2012, 'SWORS: A system for the efficient retrieval of relevant spatial web objects', Proceedings of the VLDB Endowment, vol. 5, pp. 1914 - 1917, http://dx.doi.org/10.14778/2367502.2367536
2012
Cao X; Cong G; Jensen CS, 2010, 'Mining significant semantic locations from GPS data', Proceedings of the VLDB Endowment, vol. 3, pp. 1009 - 1020, http://dx.doi.org/10.14778/1920841.1920968
2010
Cao X; Cong G; Jensen CS, 2010, 'Retrieving top-k prestigebased relevant spatial web objects', Proceedings of the VLDB Endowment, vol. 3, pp. 373 - 384, http://dx.doi.org/10.14778/1920841.1920891
2010
Conference Proceedings (Editor of)
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Chang L; Gan J; Cao X, (eds.), 2019, 'Preface', Sydney, Vol. 11393 LNCS, pp. vii, presented at 30th Australasian Database Conference, Sydney, 29 January 2019 - 01 February 2019, http://dx.doi.org/10.1007/978-3-030-12079-5
2019

ARC DECRA Fellowship 2019.04-2022.04

1. Efficient and Effective Location-Aware Search on Social Networks
Australian Research Council Discovery Early Career Researcher Award (DE190100663), AUD $402,000. Sole Investigator, 2019 - 2021.

2. A Robust and Efficient Vision-based NSW Vehicle Number Plate Recognition System
NSW TechVouchers, AUD $15,000. Co-Investigator, 2018-2019.

3. High-Performance GPU Accelerated Large-Scale Data Processing
UNSW Research Infrastructure Funding 2019, AUD $100,000. Lead Investigator, 2019.

4. UNSW Academic Startup Funding. AUD $90,000, 2019-2021.