1. Allan, J., Carbonell, J., Doddington, G., Yamron, J., Yang, Y., 1998. Topic detection and tracking pilot study: Final report. In: Proceedings DARPA Broadcast News Transcription and Understanding Workshop, Lansdowne, VA, February. Morgan Kaufmann, Los Altos, CA, pp. 194–218
2. A tree-based statistical language model for natural language speech recognition;Bahl;IEEE Transactions on Acoustics, Speech and Signal Processing,1989
3. A maximization technique occurring in the statistical analysis of probabilistic functions in Markov chains;Baum;The Annals of Mathematical Statistics,1970
4. Beeferman, D., Berger, A., Lafferty, J., 1999. Statistical models for text segmentation. Machine Learning 34(1–3), 177–210 (Special Issue on Natural Language Learning)
5. Classification and Regression Trees;Breiman,1984