Q10 2018
CS-439 exercises · 106 · 7 · 7 Jul
Hey, how can the bound for the L_i=\norm(a_i)^2 be obtained? I tried to apply triangle inequality.…
Q29 2020
CS-439 exercises · 71 · 2 · 7 Jul
Hi, could you give some approximative steps on how to solve this question? Thank you.
Variance development
CS-439 lectures · 85 · 3 · 7 Jul
Hello, When rereading the course, I noticed that the following development (p. 93) does not look…
Q23 Exam 2020
CS-439 Uncategorized · 39 · 1 · 7 Jul
Hello, Anyone has understood how we derived the part shown in the image of the solution below?![ou…
Greenstadt’s approach (section 8.4)
CS-439 lectures · 35 · 0 · 7 Jul
This section is labelled as optional material in the lecture notes. Does that mean its contents wil…
Mechanical pencil for open questions
CS-439 Uncategorized · 36 · 1 · 7 Jul
Hello, I see that the requirement for blue/black pen is for the MCQ/TF part. Does it mean that w…
Q24 2019
CS-439 exercises · 69 · 4 · 7 Jul
Hi, in the second step when calculating the p* shouldn't the norm of grad(f) be squared? Thank yo…
Extra Paper during Exam
CS-439 Uncategorized · 44 · 1 · 7 Jul
Since the space on the exam for each question looks fairly limited, if we make a mistake, can we ge…
Should we solve all?
CS-439 Uncategorized · 67 · 2 · 7 Jul
Hi, is it possible to solve the whole test for 3 hrs? Or it is longer on purpose? So we shouldn'…
how to determine a function is strongly convex or not
CS-439 exercises · 66 · 2 · 7 Jul
is there any intuitive understanding about whether a function is strongly convex or not? In exam 20…
Exam 2020: Q2
CS-439 exercises · 95 · 3 · 7 Jul
Why isn't sin(x) with x between pi and 2pi strongly convex?
Q16 2019
CS-439 exercises · 91 · 3 · 6 Jul
Hi, why this statement is TRUE? Isn't the bounded set A can be non-convex? Thanks.
2018 Q24
CS-439 exercises · 67 · 3 · 6 Jul
Hello, I don't understand why the function is convex. The distance is a minimum of a L2 norm, but t…
Q21 exam 2019 and Q21 exam 2020
CS-439 exercises · 74 · 2 · 6 Jul
Hi, I am having trouble understanding the difference between Q21 in exam 2020 and Q21 in 2019. F…
Exam 2020 Q18
CS-439 Uncategorized · 59 · 2 · 6 Jul
Hi, Is it False because we don't need "a bounded and convex constraint set"? In the lecture, p…
Q28 2019
CS-439 exercises · 35 · 1 · 6 Jul
Hi, how can I prove that the norm-2 of A is eps+d? Thank you.
Q16 2018
CS-439 exercises · 51 · 2 · 6 Jul
Hi, I understand the reason behind the relative ordering of the algorithms, although why is the ca…
Using pencil for open questions
CS-439 exercises · 37 · 1 · 6 Jul
Hi, apart from the MCQ part, can we use pencil to answer the open questions?
Question for Q22 in the exam 2020
CS-439 exercises · 43 · 1 · 6 Jul
Hi, I have a question for question 22 in the exam 2020. Why it is true? In my understanding, Sig…
Question for exam 2020 Q4
CS-439 exercises · 45 · 2 · 6 Jul
Hi, I have a question for Q4 in the exam 2020. How to prove that function D is strictly convex? …