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Ph.D. candidate
CSE dept., SUNY at Buffalo
Center for Unified Biometrics and Sensors
520 Lee Entrance, Suite 202
Amherst, NY 14228
Phone: (716) 645-6164 Ext. 504
Email: hlei 'at' buffalo.edu

His research interests include but are not limited to: biometrics, pattern recognition, data mining and machine learning.

1. October 21st, 2005, PhD dissertation Sequential Pattern Classification Without Explicit Feature Extraction was defended.
2. April 30th, 2005. Similarity-driven Sequence Classification Based on Support Vector Machines and Its Application in Adaptive On-line Handwriting Recognition submitted to ICDAR'05 was accepted.
3. March 31st, 2005. A Study on the Consistency of Features for On-line Signature Verification extended to Pattern Recognition Letters was accepted with minor revisions.
4. March 6th, 2005. Half-Against-Half Multi-class Support Vector Machines submitted to MCS'05 was accepted.
5. Feb 18th, 2005. Speeding Up Multi-class SVM by PCA and Feature Selection submitted to FSDM'05 was accepted.
6. Jan 18th, 2005. Matching and Retrieving Linear Patterns Under Regression (extended) submitted to journal of WIAS was accepted.

• Biometrics

  [1] Hansheng Lei, S. Palla, V. Govindaraju. ER-squared: an Intuitive Similarity Measure for On-line Signature Verification. The 9th International Workshop on Frontiers in Handwriting Recognition (IWFHR'04), Tokyo, Japan, Oct., 2004 [Presentation]

  [2] Hansheng Lei, S. Palla, V. Govindaraju. Mouse-based signature verification for secure Internet transactions. The 17th SPIE conference, Applications of Neural Networks and Machine Learning in Image Processing IX (to appear), California, USA, Jan., 2005

  [3] Hansheng Lei, V. Govindaraju. A Study on the Consistency of Features for On-line Signature Verification. Joint IAPR International Workshops on Syntactical and Structural Pattern Recognition and Statistical Pattern Recognition (In conjunction with ICPR'04, International Conference on Pattern Recognition), Portugal, Lisbon, 2004. Pattern Recognition Letters (accepted with minor revisions)

• Data Mining

  [1] Hansheng Lei, V. Govindaraju. GRM: Generalized Regression Model for Clustering Linear Sequences. The 4th SIAM International Conference on Data Mining (SIAM DM'04) , pp. 23-32, Florida, USA, April, 2004

[2] Hansheng Lei, V. Govindaraju. Matching and Retrieving Linear Patterns Under Regression. The 2004 IEEE/WIC/ACM International Conference on Web Intelligence (Oral, Acceptance rate: 16%), pp. 84-90, Beijing, China, Sept., 2004. Extended version accepted by International Journal of Web Intelligence and Agent Systems (WIAS)

• SVM Classification

  [1] Hansheng Lei. Govindaraju. Half-Against-Half Multi-class Support Vector Machines. Sixth International Workshop on Multiple Classifier Systems (MCS'05), accepted, to appear, Jan., 2005

  [2] Hansheng Lei, V. Govindaraju. Speeding Up Multi-class SVM by PCA and Feature Selection. Feature Selection in Data Mining, Workshop in conjunction with the 5th SIAM International Conference on Data Mining (SIAM DM'05), California, USA, 2005

  [3]Hansheng Lei, V. Govindaraju. Similarity-driven Sequence Classification Based on Support Vector Machines and Its Application in Adaptive On-line Handwriting Recognition. The 8th International Conference on Document Analysis and Recognition (ICDAR'05), submitted Feb, 2005 (accepted, to appear)

• Image Processing

[1] Hansheng Lei, V. Govindaraju. Direct Image Matching by Dynamic Warping. The 1st IEEE Workshop on Face Processing in Video (In conjunction with CVPR'04, IEEE International Conference on Computer Vision and Pattern Recognition), Washington D.C., 2004

[2] Hansheng Lei, X. Zhu. Facial Image Compression Based On Wavelet and Vector Quantization. Journal of Graphics And Images (in Chinese), November 2000

• Spring 2005, Fall 2001

  --Teaching Assistant for CSE113 (Introduction to Computer Science I for Non-Majors), SUNY at BUFFALO. Lecturer: Michael Buckley

• Fall 2004

  --Teaching Assistant for CSE666 (Image Analysis), SUNY at BUFFALO. Professor: Venu Govindaraju (advisor)

  --Research project: Multimodal Biometrics, in conjunction with Ultra-Scan, supported by US Army Research Laboratory

• Summer 2004

  --Research Assistant at CUBS, the Center for Biometrics and Sensors, SUNY at BUFFALO.

• Spring 2004

  --Teaching Assistant for CSE116 (Programming for CS Majors), SUNY at BUFFALO. Professor: Carl Alphonce

• Fall 2003, Fall 2002

  --Teaching Assistant (Senior TA) for CSE573 (Computer Vision and Image Processing), SUNY at BUFFALO. Professor: Peter Scott

• Spring 2003

  --Teaching Assistant for Secure CSE524(E-Commerce Technology)

• Spring 2002

  --Teaching Assistant for CSE113 (Introduction to Computer Science I for Non-Majors), Professor: Barbara A. Sherman