What does "w" refer to in w.x+b=0?

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Manikrao Dhore

Yes, it is a normal vector which is perpendicular to the given hyperplane. In SVM, it is used to calculate the margins between the two hyperplanes.

Sheema Khattak

How can we use it or how can we see the value "w" is holding?

Dheeb Albashish

Hello

the weight value is computed by

w = (model.sv_coef' * full(model.SVs));