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PLS2 vs PLS1

duqqud's picture
Forums: 

Hi all,

I am developing a pls model to predict a multivariate Y set.

The pls1 algorithm outperforms pls2 quite a lot. I was told this is common, but struggling to understand why. 

Could someone explain this to me, in maths? P.S., I used the default SIMPLS algorithm.

 

Thanks