1. RobertNau Statistical forecasting: notes on regression and time series analysis https://people.duke.edu/~rnau/regintro.htm(accessed 12 May 2021).
2. https://www.analyticsvidhya.com/blog/2016/01/xgboost‐algorithm‐easy‐steps
3. PulkitS01.K‐Means implementation.GitHub Inc.https://gist.github.com/PulkitS01/97c9920b1c913ba5e7e101d0e9030b0e
4. https://pdfslide.net/documents/chapter‐321‐logistic‐regression‐ncss‐321‐logistic‐regression‐introduction‐.html
5. https://iq.opengenus.org/newton‐raphson‐method