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**inactive**. Browsing/searching possible.###### Duality: when is dual better than primal? (unclear)

Lectures
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11 Jan '21

Hi!
I'm still confused as to which cases are better with dual or with primal. The formulation o…

###### Classifying with the kernel K

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29 Dec '20

Hello! I can't understand the passages associated to the topic "Classifying with the kernel K" in l…

###### Question regarding kernelized ridge regression

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28 Dec '20

Good morning, I was a bit confused by how the expression for $$\alpha^{*}$$ was obtained in the alt…

###### alphas in SVMs

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27 Dec '20

Hi,
I was reading over the conditions for alpha in SVM. I understand if it is correctly classifi…

###### Hard vs Soft Margin SVM interpretation

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26 Dec '20

Hello, I have a doubt about the interpretation I should give to hard/soft margin SVM formulations. …

###### Primal formula

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4 Nov '20

Hi,
I don't understand why in the videos we've got this formula
![Screenshot from 2020-11-03 11…

###### Don't understand this statement: 'Note that G(w, α) is convex in w and linear, hence concave, in α'

Lectures
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31 Oct '20

I am not sure how this conclusion is drawn in the Lecture 7 SVM:
"Note that G(w, α) is convex in w…

###### soft vs hard margin dual and alpha

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30 Oct '20

Good Evening,
I have a hard time seeing how we derive the constraints for alpha in the dual form…

###### Set of classifiers is not convex

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29 Oct '20

Hello,
In the first part of the first lecture (w7), when talking about the convexity of the loss…

###### Question on Coordinate descent

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28 Oct '20

Hi, Why is it easy to optimize via coordinate ascent to solve dual optimization?
Could you explai…

###### SVM soft margin

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28 Oct '20

I was wondering if the penalization for being on the wrong side of the margin (slack variables cost…

###### SVM Dual problem optimisation

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28 Oct '20

When trying to find
$$max_{\alpha\in R^N} : \alpha^T1 - \frac{1}{2\lambda}\alpha YXX^TY\alpha$$…