I have a question on how to code in R in splitting a data set for training set and validation set. I have the following example data set and I hope to conditional split the ID by 2/3 and 1/3. I have looked around the forum and I have found a code. Thank you so much in advance! Here is an example:
ID Independent_set
1 4
1 3
1 5
1 6
2 6
2 5
2 2
3 3
3 4
3 3
3 5
3 6
4 2
4 5
4 6
4 7
4 8
5 2
5 3
5 4
5 6
6 4
6 2
6 1
6 3
I want to split this data set 1/3 and 2/3 randomly. Thank you so much. This would greatly help! Any base code would greatly help me get started.
