reading-material

https://www.andrew.cmu.edu/user/achoulde/94842/homework/regression_diagnostics.html
http://data.library.virginia.edu/diagnostic-plots/
https://winvector.github.io/DataPrep/EN-CNTNT-Whitepaper-Data-Prep-Using-R.pdf
https://www.analyticsvidhya.com/blog/2016/01/guide-data-exploration/ 
http://faculty.ucr.edu/~tgirke/HTML_Presentations/Manuals/Rgraphics/Rgraphics.pdf
https://www.coursera.org/learn/exploratory-data-analysis
http://tutorials.iq.harvard.edu/R/Rgraphics/Rgraphics.html
http://www.ling.upenn.edu/~joseff/avml2012/
https://www.analyticsvidhya.com/blog/2016/03/exploring-building-banks-recommendation-system/
https://www.analyticsvidhya.com/blog/2016/09/this-machine-learning-project-on-imbalanced-data-can-add-value-to-your-resume/
https://www.analyticsvidhya.com/blog/2016/03/exploring-building-banks-recommendation-system/
https://www.analyticsvidhya.com/blog/2015/10/recommendation-engines/
https://www.crowdanalytix.com/contests/business-analytics-for-beginners-using-r---part-ii
https://www.drivendata.org/competitions/44/dengai-predicting-disease-spread/