09/1997-06/2001:B.Sc. student in China
University of Geosciences
09/2001-06/2004:M.Sc. student in China
University of Geosciences
09/2006-06/2009:Ph.D. student in China
University of Geosciences
03/2004-08/2004: Visiting Scholar in CanadaUniversity
of New Brunswick
08/2005-10/2005:Visiting Scholar in CanadaUniversity
of New Brunswick
07/2004-06/2006: Assistant in ChinaUniversity of Geosciences
07/2006-
: Lecturer in China
University of Geosciences
Teaching Courses:
Machine Learning (Graduate Course)
Data Mining and Knowledge
Discovery
(Graduate Course)
Programming in MATLAB (Undergraduate
Course)
Programming in C (Undergraduate
Course)
Research Interests:
Mining data models with
accurate classification.
Classification is one of the most important tasks in data mining. In
classification, a model is built from a set of training instances
with nominal class labels and is typically measured by its classification
accuracy on the testing instances. How to learn a model with accurate
classification is a very active and useful research area.
Mining data models with
accurate ranking.
Ranking is desirable in many data mining applications. For example, a
ranking of our customers based on their likelihood of buying is helpful to
the company. In ranking, a model is built from a set of training
instances with nominal class labels and is typically measured by its AUC
(the area under the ROC curve) on the testing instances.
Mining data models with
accurate class probability estimation. For many data mining applications,
good accuracy and AUC are not sufficient. Thus, a model with accurate
probability estimation of class membership is desirable. In probability
estimation, a model is built from a set of training instances with
nominal class labels and is typically measured by its CLL
(conditional log likelihood) on the testing instances.
Selected
Publications:
L. Jiang, H. Zhang, and Z. Cai. A Novel Bayes Model: Hidden Naive Bayes. IEEE
Transactions on Knowledge and Data Engineering, in press.
L. Jiang, C. Li, and Z. Cai. Learning Decision Tree for Ranking. Knowledge
and Information Systems, in press.
L. Jiang, C. Li, and Z. Cai. Decision Tree with Better Class Probability Estimation.
International Journal of Pattern Recognition and Artificial Intelligence,
in press.
L. Jiang, D. Wang, Z. Cai, S. Jiang,
and X. Yan. Scaling Up the Accuracy of
K-Nearest-Neighbor Classifiers: A Naive-Bayes Hybrid. International
Journal of Computers and Applications, 2009, 31(1).
L. Jiang, Z. Cai,
and D. Wang. Learning Averaged One-Dependence
Estimators by Instance Weighting. Journal of Computational
Information Systems, 2008, 4(6): 2753-2760.
L. Jiang, D. Wang, H. Zhang, Z. Cai, and B. Huang. Using
Instance Cloning to Improve Naive Bayes for Ranking. International
Journal of Pattern Recognition and Artificial Intelligence, 2008, 22(6):
1121-1140.
L. Jiang, H. Zhang, and Z. Cai. Discriminatively
Improving Naive Bayes by Evolutionary Feature Selection. Romanian
Journal of Information Science and Technology, 2006, 9(3): 163-174.