References

The following is a list of resources that you can consider to get further knowledge:

• Cohen, R., & Ruths, D. (2013). Classifying political orientation on Twitter: It's not easy!. In Seventh International AAAI Conference on Weblogs and Social Media.
• Euler, L. (1953). Leonhard Euler and the K?nigsberg bridges. Scientific American, 189(1).
• Jernigan, C., & Mistree, B. F. (2009). Gaydar: Facebook friendships expose sexual orientation. First Monday, 14(10).
• Moreno, J. L., & Jennings, H. H. (1934). Who Shall Survive? Nervous and Mental Disease.
• Page, L., Brin, S., Motwani, R., & Winograd, T. (1999). The PageRank citation ranking: Bringing order to the web. Stanford InfoLab.
• Zhang, Y., & Pennacchiotti, M. (2013, May). Predicting purchase behaviors from social media. In Proceedings of the 22nd international conference on World Wide Web. ACM.