My research is primarily focused on multidimensional analysis and spatiotemporal analysis. Below are my publications in reverse chronological order.

Refereed Conferences

Graph Cube: On Warehousing and OLAP Multidimensional Networks
Peixiang Zhao, Xiaolei Li, Dong Xin, Jiawei Han.
Proceedings of the 2011 ACM SIGMOD Int. Conf. on Management of Data (SIGMOD'11), Athens, Greece, June 2011.

Incremental Clustering for Trajectories
Zhenhui Li, Jae-Gil Lee, Xiaolei Li, Jiawei Han.
Proceedings of the 2010 Database Systems for Advanced Applications (DASFAA'10), Tsukuba, Japan, April 2010.

Temporal Outlier Detection in Vehicle Traffic Data
Xiaolei Li, Zhenhui Li, Jiawei Han, Jae-Gil Lee.
Proceedings of the 2009 International Conference on Data Engineering (ICDE'09), Shanghai, China, April 2009. Short Paper.

TraClass: Trajectory Classification Using Hierarchical Region-Based and Trajectory-Based Clustering
Jae-Gil Lee, Jiawei Han, Xiaolei Li, Hector Gonzalez.
Proc. 2008 Int. Conf. on Very Large Data Base (VLDB'08), Auckland, New Zealand, Aug. 2008.

Sampling Cube: A Framework for Statistical OLAP over Sampling Data
Xiaolei Li, Jiawei Han, Zhijun Yin, Jae-Gil Lee, Yizhou Sun.
Proc. 2008 ACM SIGMOD Int. Conf. on Management of Data (SIGMOD'08), Vancouver, BC, Canada, June 2008.

Trajectory Outlier Detection: A Partition-and-Detect Framework
Jae-Gil Lee, Jiawei Han, Xiaolei Li.
Proceedings of the 2008 International Conference on Data Engineering (ICDE'08), Cancun, Mexico, April 2008. Full Paper.

DataScope: Viewing Database Contents in Google Maps' Way
Tianyi Wu, Xiaolei Li, Dong Xin, Jiawei Han, Jacob Lee, Ricardo Redder.
Proceedings of the 33rd International Conference on Very Large Data Bases (VLDB 2007), Vienna, Austria, Sept 2007. System Demo.

Adaptive Fastest Path Computation on a Road Network: A Traffic Mining Approach
Hector Gonzalez, Jiawei Han, Xiaolei Li, Margaret Myslinska, John Paul Sondag.
Proceedings of the 33rd International Conference on Very Large Data Bases (VLDB 2007), Vienna, Austria, Sept 2007. Full Paper.

Mining Approximate Top-K Subspace Anomalies in Multi-Dimensional Time-Series Data
Xiaolei Li, Jiawei Han.
Proceedings of the 33rd International Conference on Very Large Data Bases (VLDB 2007), Vienna, Austria, Sept 2007. Full Paper.

Traffic Density-based Discovery of Hot Routes in Road Networks
Xiaolei Li, Jiawei Han, Jae-Gil Lee, Hector Gonzalez.
Proceedings of the 10th International Symposium on Spatial and Temporal Databases (SSTD 2007), Boston, MA, Jul 2007. Full Paper.

ROAM: Rule- and Motif-Based Anomaly Detection in Massive Moving Object Data Sets
Xiaolei Li, Jiawei Han, Sangkyum Kim, Hector Gonzalez.
Proceedings of the Seventh SIAM International Conference on Data Mining (SDM 2007), Minneapolis, MN, Apr, 2007. Full Paper.

Mining Compressed Commodity Workflows From Massive RFID Data Sets
Hector Gonzalez, Jiawei Han, Xiaolei Li.
Proceedings of the ACM Fifteenth Conference on Information and Knowledge Management (CIKM 2006), Arlington, VA, Nov, 2006. Full Paper.

Answering Top-k Queries with Multi-Dimensional Selections: The Ranking Cube Approach
Dong Xin, Jiawei Han, Hong Cheng, Xiaolei Li.
Proceedings of the 32nd International Conference on Very Large Data Bases (VLDB 2006), Seoul, Korea, Sept 2006. Full Paper.

FlowCube: Constructing RFID FlowCubes for Multi-Dimensional Analysis of Commodity Flows
Hector Gonzalez, Jiawei Han, Xiaolei Li.
Proceedings of the 32nd International Conference on Very Large Data Bases (VLDB 2006), Seoul, Korea, Sept 2006. Full Paper.

Warehousing and Analyzing Massive RFID Data Sets
Hector Gonzalez, Jiawei Han, Xiaolei Li, Diego Klabjan.
Proceedings of the The 22nd International Conference on Data Engineering (ICDE 2006), Atlanta, GA, April 2006. Full Paper.

Motion-Alert: Automatic Anomaly Detection in Massive Moving Objects
Xiaolei Li, Jiawei Han, Sangkyum Kim.
Proceedings of the 2006 IEEE Intelligence and Security Informatics Conference (ISI 2006), San Diego, CA, May 2006. Full Paper.

Mining Evolving Customer-Product Relationships in Multi-Dimensional Space
Xiaolei Li, Jiawei Han, Xiaoxin Yin, Dong Xin.
Proceedings of the The 21st International Conference on Data Engineering (ICDE 2005), Tokyo, Japan, April 2005 (acceptance rate, 19%). Poster Paper.

Scalable Construction of Topic Directory with Nonparametric Closed Termset Mining
Hwanjo Yu, Duane Searsmith, Xiaolei Li, Jiawei Han.
Proceedings of the 4th IEEE International Conference on Data Mining (ICDM 2004), Brighton, UK, November 2004 (acceptance rate, 23%). Short Paper.

High-Dimensional OLAP: A Minimal Cubing Approach
Xiaolei Li, Jiawei Han, Hector Gonzalez.
Proceedings of the 30th International Conference on Very Large Data Bases (VLDB 2004), Toronto, Canada, August 2004 (acceptance rate, 19%). Full Paper.

Star-Cubing: Computing Iceberg Cubes by Top-Down and Bottom-Up Integration
Dong Xin, Jiawei Han, Xiaolei Li, Benjamin W. Wah.
Proceedings of the 29th International Conference on Very Large Data Bases (VLDB 2003), Berlin, Germany, September 2003 (acceptance rate, 15%). Full Paper.
 

Refereed Journals

A Unifying Framework of Mining Trajectory Patterns of Various Temporal Tightness
Jae-Gil Lee, Jiawei Han, Xiaolei Li
IEEE Transactions on Knowledge and Data Engineering, 2015.

Modeling Massive RFID Data Sets: A Gateway-Based Movement Graph Approach
Hector Gonzalez, Jiawei Han, Hong Cheng, Xiaolei Li, Diego Klabjan, Tianyi Wu.
IEEE Transactions on Knowledge and Data Engineering, Vol 22, No,1, 2010.

Computing Iceberg Cubes by Top-Down and Bottom-Up Integration: The Star-Cubing Approach
Dong Xin, Jiawei Han, Xiaolei Li, Zheng Shao, Benjamin W. Wah. 
IEEE Transactions on Knowledge and Data Engineering, Vol 19, No,1, 2007, 111-126.

Making SVMs Scalable to Large Data Sets using Hierarchical Cluster Indexing
Hwanjo Yu, Jiong Yang, Jiawei Han, Xiaolei Li.
Data Mining and Knowledge Discovery. 2005.
 

Theses

High-Dimensional Online Analytical Processing: A Minimal Cubing Approach
Xiaolei Li. Master's Thesis. University of Illinois at Urbana-Champaign, May 2004.

Multidimensional Analysis of Moving Object Data
Xiaolei Li. Ph.D. Thesis. University of Illinois at Urbana-Champaign, May 2008.