1. Balcan, M.-F., Blum, A., Choi, P., Lafferty, J., Pantano, B., Rwebangira, M.R., Zhu, X.: Person identification in webcam images: an application of semi-supervised learning. In: ICML 2005 Workshop on Learning with Partially Classified Training Data, Bonn, August 2005
2. Baluja, S.: Probabilistic modeling for face orientation discrimination: learning from labeled and unlabeled examples. In: Kearns, M.S., Solla, S.A., Cohn, D.A. (eds.) Advances in Neural Information Processing Systems 11. MIT, Cambridge (1999)
3. Boser, B.E., Guyon, I.M., Vapnik, V.N.: A training algorithm for optimal margin classifier. In: Proc. 5th ACM Workshop on Computational Learning Theory, pp. 144–152, Pittsburgh, 27–29 July 1992
4. Bouchachia, A.: Learning with partly labeled data. Neural Comput. Appl. 16, 267–293 (2006)
5. Castelli, V.: The relative value of labeled and unlabeled samples in pattern recognition. Ph.D. Dissertation, Stanford University (1994)