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Effect of normalization #19

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sabu3 opened this issue Mar 4, 2016 · 1 comment

sabu3 commented Mar 4, 2016

When I use L1R_LR, a discrimination ratio changes depending on a normalization method.
I tried two normalization method.

Centering(Subtract average from each data)
Quick implementation, but discrimination ratio is below.
Normalize data with N(0,1).
Long implementation, but discrimination ratio is higher than 1.

I read the program, but I did not find a reason.

simsong commented Jan 22, 2018

This issue was moved to angleto#16

simsong mentioned this issue

Effect of normalization angleto/liblinear#16

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