Learning Bayesian Network Classifiers for Facial Expression Recognition using both Labeled and Unlabeled Data. - Ira Cohen; Nicu Sebe; Fábio Gagliardi Cozman; Marcelo Cesar Cirelo; Thomas S. Huang (CVPR (1), 2003)

Semi-Supervised Learning of Mixture Models. - Fábio Gagliardi Cozman; Ira Cohen; Marcelo Cesar Cirelo (ICML, 2003)

Semisupervised Learning of Classifiers: Theory, Algorithms, and Their Application to Human-Computer Interaction. - Ira Cohen; Fábio Gagliardi Cozman; Nicu Sebe; Marcelo Cesar Cirelo; Thomas S. Huang (IEEE Trans. Pattern Anal. Mach. Intell., 2004)