1. F. Gieseke, A. Airola, T. Pahikkala, O. Kramer, Sparse quasi-Newton optimization for semi-supervised support vector machines, in: Proceedings of the 1st International Conference on Pattern Recognition Applications and Methods, 2012, pp. 45–54.
2. The Elements of Statistical Learning;Hastie,2009
3. Support Vector Machines;Steinwart,2008
4. Semi-Supervised Learning,2006
5. Introduction to Semi-Supervised Learning;Zhu,2009