In Support Vector Machine, why is the distance from the origin to the decision boundary b / ||w||

Question

In the picture of SVM from Wikipedia, at the lower left corner - pointed by the red arrow, the distance from the (0,0) to the decision boundary is b / ||w||. Why is that? Thanks.

ad2004 · Accepted Answer · 2019-12-08T07:49:24.680

1

I believe this may explain it. Note: it seems that the picture from Wikipedia should more correctly show a dot product instead of a star I think. I hope this helps.

edited Dec 08 '19 at 07:49

answered Dec 08 '19 at 06:29

ad2004

1,698

This is very clear. Thank you so much! – Fred Chang Dec 10 '19 at 16:16

In Support Vector Machine, why is the distance from the origin to the decision boundary b / ||w||

1 Answers1