Photo credits: https://statinfer.com/203-4-1-model-selection-and-cross-validation/?c=b433a9be3189
Cross-Validation for Predictive Analytics Using Rhttp://www.milanor.net/blog/cross-validation-for-predictive-analytics-using-r/
https://machinelearningmastery.com/tune-machine-learning-algorithms-in-r/
https://stackoverflow.com/questions/25889637/how-to-use-k-fold-cross-validation-in-a-neural-network
https://machinelearningmastery.com/caret-r-package-for-applied-predictive-modeling/
https://branchesofmechanicalengineering.blogspot.com//search?q=machine-learning-9-more-on-artificial
Model Selection inwards R
http://www.stat.umn.edu/geyer/5931/mle/sel.pdf
VIDEOS