Amir Saffari Helmut Grabner Horst Bischof SERBoost: Semi-supervised Boosting with Expectation Regularization. 588-601 2008 ECCV (3) http://dx.doi.org/10.1007/978-3-540-88690-7_44 conf/eccv/2008-3 db/conf/eccv/eccv2008-3.html#SaffariGB08