Perturbation LDA: Learning the difference between the class empirical mean and its expectation

School of Mathematics & Computational Science, Sun Yat-sen University, Guangzhou, P. R. China, E-mail: [email protected] Department of Electronics & Communication Engineering, School of Information Science & Technology, Sun Yat-sen University, Guangzhou, P. R. China, E-mail: [email protected] Guangdong Province Key Laboratory of Information Security, P. R. China Department of Computer Science, Hong Kong Baptist University, Hong Kong, E-mail: [email protected] Center for Biometrics and Security Research & National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, P. R. China, E-mail: [email protected]