1. Netcraft’s internet survey for August 2012.
http://news.netcraft.com/archives/2013/08/09/august-2013-web-server-survey.html
2. Simple Knn approach for text classification.
http://www.cis.uab.edu/zhang/Spam-mining-papers/A.Simple.KNN.Algorithm.for.Text.Categorization.pdf
3. Optimized approach for text classification.
http://www.cis.uab.edu/zhang/Spam-mining-papers/An.Optimized.Approach.for.KNN.Text.Categorization.using.P.Trees.pdf
4. Guo G, Wang H, Greer K (2004) A kNN model-based approach and its application in text categorization. In: 5th international conference, CICLing Springer, Seoul, Korea, pp 559–570
5. McCallum A, K. Nigam (1988) A comparison of event models for Naïve Bayes text classification. In: AAAI/ICML-98 workshop on learning for text categorization, pp 41–48