Chuyao Chen Daqi Zhu Qian Liu Improved Kernel Principal Component Analysis and Its Application for Fault Detection. 688-695 2008 ICIC (1) http://dx.doi.org/10.1007/978-3-540-87442-3_85 conf/icic/2008-1 db/conf/icic/icic2008-1.html#ChenZL08a