How to choose the value of K in K Fold ?

Question

I didn't understand well the principal of K Fold just knowing that if we have a database we divide it into training and testing values depending on the K value , so how can i know he right value ?

Answer 1

https://datascience.stackexchange.com/questions/28158/how-to-calculate-the-fold-number-k-fold-in-cross-validation