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

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Why are the Lagrange multipliers sparse for SVMs?

The Lagrange multipliers in the context of SVMs are typically denoted $\alpha_i$. The fact that one often observes that most $\alpha_i=0$ is a direct consequence of the Karush-Kuhn-Tucker (KKT) dual c …
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