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**inactive**. Browsing/searching possible.###### Computational cost for projected gradient descent

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125
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2
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13 Jan '21

What is the Computational cost for projected gradient descent?

###### Computaional cost for grid search

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79
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2
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11 Jan '21

I am having trouble computing the computational cost for grid search. Can someone please help with …

###### Computational cost

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4
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9 Jan '21

If the cost to compute \( \mathbf{e}\) is
$$
O(N*D) + O(N)
$$
and the cost to compute \(…

###### minibatch implementation

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3
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8 Jan '21

Good evening,
Looking online I find different ways to implement minibatch GD. Some select B rand…

###### second order condition

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81
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2
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5 Jan '21

Hi,
In lecture 2 page 22 formula (2) I don't understand why the condition is stated as positive …

###### Convergence : gradient descent 1-param model

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65
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1
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28 Dec '20

How would you prove the convergence of the sequence only for gama in (0;2)?
![Captură de ecran 2…

###### Subgradients

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188
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4
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28 Dec '20

According to the definition of subgradient
$$
\mathcal{L}(\mathbf{u}) \geq \mathcal{L}(\mathbf{…

###### Constrained optimization & feature normalization

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113
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2
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26 Sep '20

Thank you so much for answering all my previous questions :)
I have the following questions fr…

###### SGD and (N<D)

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81
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3
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24 Sep '20

We said that (N<D) case is undetermined for linear regression problem.
But if we use SGD we may ev…

###### GD: gammas that guarantee convergence

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96
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3
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24 Sep '20

Can you explain further in detail how to calculate/compute the range of gammas that guarantee conve…

###### GD on Hyperparameters

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105
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5
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24 Sep '20

In the lecture, Martin mentioned that Grid Search is the simplest but not the best optimization alg…