Vanishing gradient
Exercises · 208 · 5 · 13 Jan '21
Hi, In problem about vanishing gradient of problem set 8, I obtained the bound 1/4 given by deriv…
ALS with missing entries
Exercises · 207 · 8 · 12 Jan '21
Hi, I wanted to confirm the inverse is taken after the sum right? it's not a sum of inverses? …
Clarification adversarial example
Exercises · 158 · 6 · 12 Jan '21
Hi, I have a question regarding the solution of the problem set 10. Here : ![screen3.jpg](https…
SVM dual optimization
Exercises · 219 · 6 · 9 Jan '21
Hello, I had a question regarding the dual formulation ascent step. I do not understand why \( \alp…
Vanishing Gradient
Exercises · 91 · 2 · 9 Jan '21
Hello :) I'm struggling to understand the role of the weights on the vanishing gradient problem.…
conditional probability
Exercises · 108 · 2 · 8 Jan '21
Hi, I was wondering if including pi in the probability expression (highlighted) is necessary, i…
how to compute the unitary matrix U?
Exercises · 83 · 1 · 6 Jan '21
For theory problem 1, the solution says to compute the matrix U by computing u_j = X v_j. But for m…
Use MSE instead of RMSE
Exercises · 94 · 2 · 6 Jan '21
Hello, I don't understand why we can use the MSE for update instead of the RMSE. Technically, it…
Lab 13- Exercise 3
Exercises · 80 · 1 · 3 Jan '21
Hey ! Could anyone help me deriving the first 2 points of exercise 3 please. I reckon we've don…
Exercise theory solutions
Exercises · 202 · 4 · 3 Jan '21
Would it be possible to get the solutions for exercise 4 (theory question)? Thank you in advance…
theory question complexity
Exercises · 146 · 4 · 31 Dec '20
Hello, I understand that we consider D different Wi for each dimension but how is the x N obtain…
Conclusion of 3.1
Exercises · 180 · 5 · 28 Dec '20
How do you get from: $$w = (H + \mu I)^{-1} Hw*= (QLQ^T + \mu I)^{-1} QLQ^Tw*$$ to $$w = Q(L…
Do constants matter in computational complexity ?
Exercises · 72 · 2 · 28 Dec '20
For gradient descent, the MSE is given by : $$\frac{-1}{N}X^{T}(y - Xw)$$ Which for me gives…
Serie 10 Problem 2.1 Retrieving delta*
Exercises · 195 · 5 · 28 Dec '20
Hi, I have a question for the last exercise serie problem 2.1. I have been able to get the foll…
Impact of choice of kernel on model complexity
Exercises · 77 · 2 · 23 Dec '20
Good afternoon, I am currently revising all the material from this course and I am wondering how…
Lab 13 Matrix Factorization initialization
Exercises · 72 · 1 · 22 Dec '20
Hi, I had a couple of questions regarding the matrix factorization initialization in lab 13. First …
11.1
Exercises · 107 · 2 · 5 Dec '20
Hello, i have a question about the solution: ![a.JPG](https://oknoname-crm1.s3.amazonaws.com/spir…
Lab 11 - Joint probability
Exercises · 106 · 3 · 1 Dec '20
Hey, I know it's basic stuff but could you please explain why you get the N/2 in front of the e…
Solution Lab11
Exercises · 85 · 4 · 1 Dec '20
Could you please post the solutions for lab 11, Thanks
Bug in the plotting function ?
Exercises · 84 · 1 · 24 Nov '20
Good evening, I think there is an error in the plotting file for this week, I had to change two …