Correlation

What is a correlaion? A correlation is a kind of relationship between two variables. It is a statistical value expressed in a correlation...

Random Forests

Like mentioned in the post about decision trees, the big challenge to face is overfitting. To adress the issue, a concept developed by Tin...

R - Simple Data Preparation

  R covers a huge variety of functions for data manipulation, reorganization and separation. Here are some of the commands I consider...