Tel: +1 (416) 736-2100 ext 33887
(On leave at Shandong University, China.)
I am an associate professor in the School of Information Technology, York University. I received a BSc degree from Nanjing University, China, a MPhil from the Chinese University of Hong Kong (under the supervision of Prof. Ada Fu), and a PhD from the University of Toronto (under the supervision of Prof. Nick Koudas). I am affiliated with the Graduate Program in Computer Science at York University.
My current research interests include:
In the past, I have also worked on spatio-temporal query processing, and high-dimensional data indexing.
L. Lin, X. Yu, N. Koudas. Pollux: Towards Scalable Distributed Real-time Search on Microblogs, in Proceedings of the 16th International Conference on Extending Database Technology, (EDBT 2013), Genoa, Italy, March 18-22, 2013.
Y. Liu, X. Yu, A. An, X. Huang. Riding the tide of sentiment change: sentiment analysis with evolving online reviews, to appear in World Wide Web, July 2012.
Z. Abul-Basher, Y. Feng, P. Godfrey, X. Yu, M. Kandil, D. Zilio, C. Zuzarte. Alternative Query Optimization for Workload Management, in DEXA, September 3-6, 2012.
X. Yu, H. Shi. CI-Rank: Ranking Keyword Search Results Based on Collective Importance, in Proceedings of the 28th IEEE International Conference on Data Engineering (ICDE 2012), Washington D.C. April 1-5, 2012
X. Yu, Y. Liu, X. Huang, A. An. Mining Online Reviews for Predicting Sales Performance: A Case Study in the Movie Domain, in IEEE Transactions on Knowledge and Data Engineering (TKDE), April 2012.
Y. Liu, X. Yu, X. Huang, A. An. Combining integrated sampling with SVM ensembles for learning from imbalanced datasets, Inf. Process. Manage. 47(4): 617-631 (2011)
X. Yu, J. Dong. Indexing High-Dimensional Data for Main-Memory Similarity Search, in Information Systems 35 (2010), pp. 825-843, Elsevier, November 2010. DOI:10.1016/j.is.2010.05.001
Y. Liu, X. Yu, X. Huang, A. An, S-PLSA+: Adaptive Sentiment Analysis with Application to Sales Performance Prediction, to appear in Proceedings of SIGIR 2010, July 19-23, 2010, Geneva, Switzerland. (poster)
X. Yu, Y. Liu, X. Huang, A. An. A Quality-Aware Model for Sales Prediction Using Reviews, in Proceedings of the 19th International World Wide Web Conference (WWW 2010), Raleigh, North Carolina, April 26-30, 2010. (poster)
X. Yu, H. Shi. Query Segmentation Using Conditional Random Fields, in Proceedings of the First International Workshop on Keyword Search on Structured Data (KEYS 2009), co-located with SIGMOD 2009, Providence, RI, June 28, 2009.
K. Pu, X. Yu. FRISK: Query Cleaning and Processing in Action, to appear in Proceedings of 25th International Conference on Data Engineering (ICDE 2009), Shanghai, China, March 29-April 4, 2009.
Y. Liu, X. Huang, A. An, and X. Yu. Predicting the Helpfulness of Online Reviews, to appear in Proceedings of 8th IEEE International Conference on Data Mining (ICDM 2008), Pisa, December, 2008. (Acceptance rate for full papers: 9.7%.)
Y. Liu, X. Huang, A. An, and X. Yu. HelpMeter: A Nonlinear Model for Predicting the Helpfulness of Online Reviews, to appear in Proceedings of 2008 IEEE/WIC/ACM International Conference on Web Intelligence (WI 2008), Sydney, December, 2008.
Y. Liu, X. Yu, X. Huang, A. An. Blog Data Mining: the Predictive Power of Sentiments, a chapter in L. Cao, P.S. Yu, C. Zhang, H. Zhang (eds.): Data Mining for Business Applications, Springer. To appear in late 2008.
M. Hadjieleftheriou, X. Yu, N. Koudas, D. Srivastava. Selectivity Estimation of Set Similarity Selection Queries, in the 34th International Conference on Very Large Data Bases (VLDB 2008), Auckland, New Zealand, August 2008. (pdf)