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L1-L2 REG - Which is better ?
Lectures
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91
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3
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6 Jan '21
Hey,
in the lecture notes 3d) we are asked
- when and why is sparsity in the model (L1) better…
Potential typos
Lectures
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111
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3
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5 Jan '21
Hi,
In [the lecture notes about ridge regression](https://github.com/epfml/ML_course/blob/master…
second order condition
Lectures
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82
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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 …
unsupervised learning
Lectures
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99
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2
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4 Jan '21
hi,
I was wondering how we tune hyperparameters in unsupervised learning (for ex k in K-means). …
Question 4 proofs
Lectures
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65
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1
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4 Jan '21
Should we know by hard the proof for lecture 4A? For example, do we need to know by hard the proof …
Cost of ALS
Lectures
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121
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1
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4 Jan '21
Hi, I have a few questions regarding the lecture notes of ALS:
First of all, what is the cost of…
Week 12: Differentiable Nash equilibrium
Lectures
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108
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3
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3 Jan '21
Hi, I have a question regarding the equations shown in slide 5 of the first lecture of week 12:
…
Adversarial training and Randomized smoothing
Lectures
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97
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1
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3 Jan '21
Hello! I have two questions related to the lecture about Adversarial ML.
1. In the paragraph abou…
GMM - z_n assignments
Lectures
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101
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2
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1 Jan '21
Good morning, I was reviewing Gaussian mixture models and am struggling to understand how soft clus…
Using the Hessian to prove that the loss function is convex
Lectures
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166
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5
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31 Dec '20
Hi, I have a question regarding the use of the Hessian (H) to prove that the loss function for logi…
Potential typo
Lectures
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72
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1
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31 Dec '20
Hi,
In [the lecture notes about model selection](https://github.com/epfml/ML_course/blob/master/…
MSE Proof convexity using definition
Lectures
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117
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3
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30 Dec '20
Hi everyone,
Could you please elaborate the intermediate steps for this computation?
Also, wher…
Question regarding generalization error
Lectures
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141
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3
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30 Dec '20
Hello, in lecture 4 when explaining the upper bound on the true error, I don't understand the role …
Classifying with the kernel K
Lectures
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105
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5
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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…
Lecture 11 : EM
Lectures
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63
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1
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29 Dec '20
Hello, I am unsure how to get the update parameters $$\mu_{k}^{(t+1)}$$
, i.e. I try to derive L_…
Logistic regression equation on the first page
Lectures
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87
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5
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29 Dec '20
Hello,
I wanted to ask if the equation in the photo is correct to have y in the power in the den…
text classification using matrix factorization
Lectures
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94
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2
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29 Dec '20
Hi there :)
I was asking myself how to deal with the test set when using matrix factorization.
…
Adversarial risk in high dimension
Lectures
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122
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2
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29 Dec '20
Hello,
I have a question regarding adversarial risk in high dimension. Based on the first exampl…
lecture 11 EM kmeans
Lectures
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68
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1
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29 Dec '20
Hi,
I understand that as sigma tends to 0 qkn converges towards zkn. But I don't understand why th…
L2-norm Regularization
Lectures
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90
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2
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29 Dec '20
Hello,
I don't understand clearly why the L2-norm regularization term forces the model to be simpl…