1. Bernstein, D. S. (2005). Matrix mathematics. Princeton: Princeton University Press.
2. Boutell, M., Luo, J., Shen, X., & Brown, C. (2004). Learning multi-label scene classification. Pattern Recognition, 37(9), 1757–1771.
3. Cai, L., & Hofmann, T. (2007). Exploiting known taxonomies in learning overlapping concepts. In Proceedings of the international joint conference on artificial intelligence (pp. 714–719).
4. Cesa-Bianchi, N., Gentile, C., & Zaniboni, L. (2006). Incremental algorithms for hierarchical classification. Journal of Machine Learning Research, 7, 31–54.
5. Chang, C.-C., & Lin, C.-J. (2001). LIBSVM: a library for support vector machines. Software available at http://www.csie.ntu.edu.tw/~cjlin/libsvm .