Yeah , it might be that LDA could be better.
The a the argument i is kind of i in  and it 's not like we really know , but the argument anyway is that , um , uh , we always have the prob I mean , discriminative things are good. LDA , neural nets , they 're good.
Yeah.
Uh , they 're good because you  you  you learn to distinguish between these categories that you want to be good at distinguishing between. And PCA doesn't do that. It  PAC - PCA  low - order PCA throws away pieces that are uh , maybe not  not gonna be helpful just because they 're small , basically.