Lecturer,School of Artificial Intelligence, Beijing Normal University.
In 2007 Ph. D, Nanyang Technological University, Singapore.
 Pengfei Xu, Chip-Hong Chang, Andrew P. Paplinski: Self-organizing topological tree for online vector quantization and data clustering. IEEE Transactions on Systems, Man, and Cybernetics, Part B 35(3): 515-526 (2005).
 Chip-Hong Chang, Pengfei Xu, Rui Xiao, Srikanthan, T.: New adaptive color quantization method based on self-organizing maps. IEEE Transactions on Neural Networks, Vol 16, Issue 1, (237-249 (2005).