1. K. Nigam, R. Ghani, Analyzing the effectiveness and applicability of co-training, in: Proceedings of the Ninth International Conference on Information and Knowledge Management (CIKM'00), Washington DC, 2000, pp. 86–93.
2. Text classification from labeled and unlabeled documents using EM;Nigam;Int. J. Mach. Learn Res.,2000
3. S. Goldman, Y. Zhou, Enhancing supervised learning with unlabeled data, in: Proceedings of the Seventeenth International Conference on Machine Learning (ICML'00), 2000, pp. 327–334.
4. Tri-training: exploiting unlabeled data using three classifiers;Zhou;IEEE Trans. Knowl. Data Eng.,2005
5. A. Blum, S. Chawla, Learning from labeled and unlabeled data using graph min-cuts, in: Proceedings of the eighteenth International Conference on Machine Learning (ICML'01), 2001, pp. 19–26.