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pca empirical covariance
Lectures
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124
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2
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24 Jan '21
hello,
I was wondering why in the empirical formula we don't have 1/N-1 instead of 1/N for covar…
Is GAN a zero-sum game?
Lectures
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260
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5
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15 Jan '21
There's no doubt that GAN is a two-player game, but is it zero-sum?
Based on the definition of a z…
Computational cost for projected gradient descent
Lectures
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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?
Mistake SVD annotated lecture
Lectures
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94
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1
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12 Jan '21
I believe the annotation at the end of the lecture is wrong. I believe it says U <--- EVD(X) wherea…
Convexity and NN
Lectures
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72
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2
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12 Jan '21
Hello,
I was wondering why we don't use a convex activation (whose compositions would also be co…
Regulatization and over-parametrized problem
Lectures
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74
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1
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12 Jan '21
Hi!
How does regularization solve this over-parametrized problem? With regularization, the number …
K-means
Lectures
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119
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2
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12 Jan '21
what is the complexity of k means?
Is it N-P hard or O(N.K.D) ?
Truncated SVD
Lectures
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103
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2
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12 Jan '21
Hi!
I'm a little confused about the dimensions of the matrices.
1) The Uk matrix has size D*K, t…
Proof of the SVD lemma
Lectures
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109
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2
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12 Jan '21
Hello !
I have some troubles understanding the following statement in the proof:
![ML.jpg](https:…
Convexity and unique minimum when matrices are the parameter
Lectures
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78
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1
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12 Jan '21
Hi,
How does the concept of convexity and conditions unique minimum extend to functions that dep…
randomized smoothing
Lectures
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67
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1
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12 Jan '21
Hello,
I don't understand this explanation. So we have a point x that has expected value of clas…
MAP and maximum likelihood criterion
Lectures
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213
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7
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12 Jan '21
Hello everyone,
When reading the lecture note of 5a classification, I found it says that
"To …
Linear separability for linear regression.
Lectures
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326
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7
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12 Jan '21
Dear TAs,
I am struggling to understand why linear separability matters for linear regression. I…
how do we know link function
Lectures
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93
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3
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12 Jan '21
Hi,
In parameter estimation since we don't know eta, how do we know the link function g needed to…
Computaional cost for grid search
Lectures
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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 …
gan objective vs individual losses
Lectures
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59
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1
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11 Jan '21
hello,
I don't understand the link between the objective function and the individual losses. We …
GAN algorithm
Lectures
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212
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4
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11 Jan '21
Hello,
For the GAN algorithm, there are two different versions, one in the original slides and on…
GAN NE and algorithm
Lectures
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164
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4
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11 Jan '21
Hi,
I was looking at the GANS lecture for the NE definition and was wondering if it is local sho…
Duality: when is dual better than primal? (unclear)
Lectures
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61
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1
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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…
K means
Lectures
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85
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3
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11 Jan '21
In lecture 10B, it was mentioned that K means clustering is NP-hard. Can you please explain what do…