After running Learn R PLS, the following result was presented.
"TRAINING: % variance explained
1 comps 2 comps 3 comps 4 comps 5 comps 6 comps
X 24.80 34.45 47.24 54.47 60.47 63.94
pIC50 33.98 50.33 57.84 64.14 69.79 74.18"
According to a plot accompany the result, I guess that the "TRAINING: % variance explained...pIC50" is what we usually call R2, isn't it?
I am not sure what dose "TRAINING: % variance explained...X" stand for. Would anybody please tell me?
Thanks a lot!