Co-general chair, 10th IEEE Conference on Automatic Face and Gesture Recognition, April, 2013, Shanghai, China.

Area chair, ACM symposium on eye tracking research and applications, Santa Barbara, CA, March, 2012.

Senior Program Member, International Conference on Affective Computing and Intelligent Interaction (ACII), 2011

Pattern Recognition Track chair, International Conference on Pattern Recognition, Japan, 2012.

Area chair, 9th IEEE Conference on Automatic Face and Gesture Recognition, 2011

Associate editor, Pattern Recognition Letters journal, 2006-2011.

Program chair, ACM Symposum on Eye Tracking and Applications, 2010.

Lead guest editor, IEEE Transactions on Pattern Analysis and Machine Intelligence special issue on probabilistic graphical models in computer vision

Technical Area Chair, IEEE International Conference on Computer Vision and Pattern Recognition, 2008.

Technical Area Chair and program committee, the 8th IEEE International Conference on Automatic Face and Gesture Recognition, 2008.

Program Co-chair, International Workshop on Semantic Learning and Applications in Multimedia in association with CVPR , 2008, 2009.

Program Co-chair, IEEE Workshop on Motion and Video Computing, 2008.

Program committee, the 10th European Conference on Computer Vision, 2008.

Program committee, the 19th International Conference on Pattern Recognition , 2008.

Program committee, Second IEEE Workshop on Online Learning for Classification (OLC) 2008.

Program committee, Eye tracking research and application symposium, 2008.

Member of the program committee, International Conference on Computer Vision, 2007,2009.

Member of the program committee, IEEE Conference on Computer Vision and Pattern Recognition, 2007,2008, 2009.

Co-chair for the First International Workshop on Video Processing and Recognition, 2007.