This forum is

**inactive**. Browsing/searching possible.###### Access right problem with SparkContext

Labs
·
52
·
3
·
26 May '21

Hi,
I am having trouble using PySpark. Indeed, when I try to use the global SparkContext, sc,…

###### Lab 4 - LSI

Labs
·
80
·
4
·
26 May '21

Hello,
We are having some trouble with the "svds" function in the part 2 of lab 4. It seems to u…

###### Exercise 4.5 meaning of question 1

Labs
·
58
·
2
·
19 May '21

Hello,
I don't really understand what it means to "Print the top-10 topics as a combination of 10 …

###### Lecture 12 posted

Lectures
·
12
·
0
·
17 May '21

Today's lecture is online.
Please note that next Monday is a holiday, so the next (and final) le…

###### Lecture 11 posted

Lectures
·
8
·
0
·
10 May '21

Folks, this week's lecture is out (and should be playable right away).
Best regards

###### min RMS and quadratic form expression

Lectures
·
54
·
1
·
26 Apr '21

Hello,
In the lecture 7 (slide 15), I'm stuck with understanding what's the meaning of matrix A an…

###### Lecture 9 online

Lectures
·
23
·
0
·
26 Apr '21

Lecture 9 is online (video viewable as soon as switchtube processing terminates, should be very soo…

###### Hw4-Ex3

Homeworks
·
64
·
1
·
22 Apr '21

Hello,
I have a question about exercice 3a). Why can we say that the sum of the f_i equal the gl…

###### Lecture 5 posted

Lectures
·
67
·
3
·
19 Apr '21

This week's lecture video and deck are online.
Best regards

###### Exercise 2.10

Labs
·
68
·
1
·
8 Apr '21

Hey !
I was wondering for this part when we are asked to simulate the epidemic multiple times st…

###### Lab 2 : Part 3 - What do the coordinates correspond to ?

Labs
·
51
·
1
·
4 Apr '21

Hi,
In the lab handout for part 3, it is written in the description of the json file :
"a tup…

###### Exercise 2.9

Labs
·
48
·
1
·
3 Apr '21

Hey ! About the question 4, I was wondering if we had to represent the visualization of the graph a…

###### Lecture 6 posted

Lectures
·
14
·
0
·
29 Mar '21

The video and slides for this week's lecture are online.

###### Proof of the linear system equivalence

Lectures
·
85
·
4
·
25 Mar '21

Hello,
In this proof, if I understand correctly, we are trying to show that x(I - theta H) = a (ev…

###### Using regular Spark on cluster

Labs
·
51
·
2
·
19 Mar '21

Hello!
I was wondering if there's a way to use regular Spark on the cluster as opposed to pyspar…

###### Part 2.2, exercice 2.7 and 2.8 [copy of a discord post]

Labs
·
99
·
2
·
19 Mar '21

Hello !
I was wondering for part 2.2, exercice 2.7 and 2.8 how to know the size of N ? (for how…

###### Conductance of a graph

Lectures
·
53
·
1
·
16 Mar '21

Hello,
Would it be possible to expand on how to actually find the set S that that minimizes the co…

###### Lecture 4 posted

Lectures
·
17
·
0
·
15 Mar '21

Dear all, lecture 4 is now available (modulo some potential processing delay by switchtube...)