Additional readings

I have added 

Christopher D. Manning, Prabhakar Raghavan, Hinrich Sch¨¹tze, Introduction to Information Retrieval, Cambridge University Press. 2008. (online edition)

• Ch. 13 Text classification and Naive Bayes, section 13.6: Evaluation

to the mandatory readings on evaluation (week 9). I have also added sec. 13.0-13.4 from the same chapter to the recommended readings on text classification and NB (week 4) as it explains the differences between the various models in more details.