1. CS229 machine learning (stanford university). http://cs229.stanford.edu/materials/ML-advice.pdf . CS229 machine learning (stanford university). http://cs229.stanford.edu/materials/ML-advice.pdf .
2. Enron-spam dataset. http://www.aueb.gr/users/ion/data/enron-spam/index.html. Enron-spam dataset. http://www.aueb.gr/users/ion/data/enron-spam/index.html.
3. Liblinear. https://www.csie.ntu.edu.tw/~cjlin/liblinear/. Liblinear. https://www.csie.ntu.edu.tw/~cjlin/liblinear/.
4. Machine learning (stanford university). https://www.coursera.org/learn/machine-learning. Machine learning (stanford university). https://www.coursera.org/learn/machine-learning.
5. Spamassassin dataset. https://spamassassin.apache.org/publiccorpus/. Spamassassin dataset. https://spamassassin.apache.org/publiccorpus/.