Algorithm 5: Algorithm for the k-fold cross validation

Input: $D=\left\{d_1,d_2,\dots .,d_n\right\}$, class labels

Step1: Initialize $i\leftarrow 1,k\leftarrow 5$

Step2: Split $D$ into k-folds

Step3: In iteration$i$, the $i^{th}$ fold is used for testing and the rest are used for training

Step4: $i\leftarrow i+1$

Step5: Repeat steps 3–4 while $i\le k$

Step6: Evaluate model on test score