I am now a software engineer at Twitter, Inc, working on recommendation system, personalization and big data analysis. I obtained my PhD degree in computer science department at UCLA in August, 2013 (from 2009 to 2013) under the supervision of Professor Zhuowen Tu. I am interested in big data analysis, recommendation system, machine learning, data mining and computer vision.
Contact Info: email@example.com; Twitter Handle: @truthseeker1985
Publications [Google Scholar page]:
 Quannan Li, Jiajun Wu and Zhuowen Tu, "Harvesting Mid-level Visual Concepts from Large-scale Internet Images", CVPR 2013 [pdf] [project page]
 Quannan Li, Jingdong Wang, David Wipf and Zhuowen Tu, "Fixed-Point Model for Structured Labeling", ICML 2013 [code] [pdf]
 Quannan Li, Cong Yao, LiweiWang and Zhuowen Tu, "Randomness and Sparsity Induced Codebook Learning with Application to Cancer Image Classi.cation". Workshop of Medical Computer Vision at CVPR, 2012. [code] [pdf]
 Quannan Li, XinggangWang,WeiWang, Yuan Jiang, Zhi-Hua Zhou and Zhuowen Tu, "Disagreement-Based Multi-System Tracking". Workshop of Detection and Tracking in Challenging Environments, 2012 [pdf]
 Xiang Bai, Quannan Li, Tianyang Ma, Wenyu Liu, Longin Jan Latecki, "Binarization of Gray-level Images Based on Skeleton Region Growing", Digital Geometry Algorithms, 2012 [pdf]
 Yi Hong, Quannan Li, Jiayan Jiang and Zhuowen Tu. "Learning a Mixture of Sparse Distance Metrics for Classi.cation and Dimensionality Reduction". ICCV 2011 [pdf]
 Yu Zheng, Yukun Chen, Quannan Li, Xing Xie and Wei-Ying Ma, "Understanding Transportation Modes Based on GPS Data for Web applications". ACM Transactions on the Web (TWEB) 4(1) (2010) [pdf]
 Xiang Bai, Quannan Li, Longin Jan Latecki, Wenyu Liu and Zhuowen Tu, "Shape Band: A Deformable Object Detection Approach". CVPR 2009 [pdf]
 Chengqian Wu, Xiang Bai, Quannan Li, Xingwei Yang, Wenyu Liu, Contour "Grouping with Partial Shape Grouping", PSIVT 2009 [pdf].
 Quannan Li, Yu Zheng, Xing Xie, Yukun Chen, Wenyu Liu and Wei-Ying Ma, "Mining User Similarity Based on Location History". GIS 2008,[pdf] The mostly cited paper in GIS 2008
 Yu Zheng, Quannan Li, Yukun Chen, Xing Xie and Wei-Ying Ma, "Understanding Mobility Based on GPS Data". UbiComp 2008 [pdf]
 Quannan Li, Xiang Bai and Wenyu Liu, "Skeletonization of Gray-scale Image From Incomplete Boundaries". ICIP,2008 [pdf].
 Longin Jan Latecki, Quannan Li, Xiang Bai, Wenyu Liu, "Skeletonization using SSM of the distance transform", ICIP 2007 [pdf].
Wenyu Liu, Xiang Bai, Quannan Li, Hairong Liu, "Skeleton Pruning by Discrete Curve Evolution" (No. 200710053534)
Member of Technical Program Committee: ICIP 2014
Review Papers for IEEE Multimedia, Pattern Recognition, , Computers & Graphics, Pattern Recognition Letters, CVPR 2014, WACV 2014, SSIAI 2014