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The method of Lagrange multipliers finds critical points (including maxima and minima) of a differentiable function subject to differentiable constraints.

3 votes

Calculating the value of $b^{*}$ in an SVM

I am also following Andrew Ng's note on SVM and had the same question. Inspired by OP's description and the first answer, I believe I have found a "natural" way of arriving at the solution $$b^*=-\fra …
Alan Yue's user avatar