Collins, Michael, ‘Discriminative Training Methods for Hidden Markov Models’, Proceedings of the ACL-02 Conference on Empirical Methods in Natural Language Processing - EMNLP ’02, 2002, pp. 1–8, doi:10.3115/1118693.1118694
Jurafsky, Dan, and James H. Martin, Speech and Language Processing: An Introduction to Natural Language Processing, Computational Linguistics, and Speech Recognition, 2nd ed (Pearson Prentice Hall, 2009), Prentice Hall series in artificial intelligence
Smith, Noah Ashton, Linguistic Structure Prediction (Morgan & Claypool, 2011), Synthesis lectures on human language technologies <http://dx.doi.org/10.2200/S00361ED1V01Y201105HLT013>
‘Stat NLP Book’, n.d. <https://github.com/uclmr/stat-nlp-book>
