This forum is inactive. Browsing/searching possible.
Connect your moderator Slack workspace to receive post notifications:
Computational cost
Lectures
·
168
·
4
·
9 Jan '21
If the cost to compute \( \mathbf{e}\) is
$$
O(N*D) + O(N)
$$
and the cost to compute \(…
question 9
Exams
·
196
·
3
·
9 Jan '21
Could someone explain to me the answer to this question? I am a little confused about why w4 is mis…
SVM dual optimization
Exercises
·
220
·
6
·
9 Jan '21
Hello, I had a question regarding the dual formulation ascent step. I do not understand why \( \alp…
QCM negative points
Exams
·
387
·
6
·
9 Jan '21
Hello,
Could we have more information on the QCM grading?
I hear there are negative points for…
Vanishing Gradient
Exercises
·
92
·
2
·
9 Jan '21
Hello :)
I'm struggling to understand the role of the weights on the vanishing gradient problem.…
mock 2014 : PCA for count data algorithm
Exams
·
64
·
1
·
9 Jan '21
hi,
I don't understand how to come up with the algorithm shown for the PCA problem. In ALS we al…
invertibility and other matrix property
Exams
·
75
·
1
·
9 Jan '21
Hi,
Which properties of matrices are we supposed to know for the exam? By that I mean for exampl…
Exam 2017 Problem 22
Exams
·
180
·
2
·
8 Jan '21
Hello,
I was wondering if the intersection between the two Train Error lines had any meaning or …
conditional probability
Exercises
·
110
·
2
·
8 Jan '21
Hi,
I was wondering if including pi in the probability expression (highlighted) is necessary, i…
Representation power
Lectures
·
143
·
3
·
8 Jan '21
Dear TAs,
I'm struggling to understand why on a bounded domain, neural nets can **not** approxim…
Training risk
Exams
·
134
·
3
·
8 Jan '21
In final exam 2019, true/false question 15, it is said that training risk converges to true risk, w…
PCA in the exam 2019
Exams
·
205
·
5
·
8 Jan '21
Could someone help to explain to me why this statement is wrong?
**In PCA, the first principal dir…
Gradient question - Exam 2018
Exams
·
219
·
5
·
8 Jan '21
Hi! I can't understand the logic of problem 10 in 2018 exam.
The question is: for which x does th…
generalization error bounds
Lectures
·
63
·
1
·
8 Jan '21
Hi!
I am having difficulty grasping the steps taken in 'a little thought' to obtain expression s…
exponential family- invertibility of link function
Lectures
·
63
·
1
·
8 Jan '21
Hello,
in al the examples investigated we saw a one to one relationship between E[phi(y)] and et…
minibatch implementation
Lectures
·
73
·
3
·
8 Jan '21
Good evening,
Looking online I find different ways to implement minibatch GD. Some select B rand…
bias-variance decomposition: what exactly is variance
Lectures
·
66
·
1
·
8 Jan '21
hi,
In bias-variance decomposition derivation I understand that the bias term is a measure of th…
first eigenvalue of SVD Decomposition
Exams
·
185
·
3
·
8 Jan '21
Good evening,
I question 6 of 2018's exam, the fact "In PCA, the first principale direction is t…
problem 15, exam 2018
Exams
·
287
·
3
·
8 Jan '21
Hello,
I don't understand why there is an exact solution to the matrix factorization problem... …
Maximum log likelihood ?
Lectures
·
100
·
2
·
7 Jan '21
Dear TAs,
I'm struggling to understand where the log comes from.
Is this the maximum likeli…