175 reputation
110
bio website ismailari.com
location ─░stanbul, Turkey
age 31
visits member for 3 years, 11 months
seen Nov 12 '13 at 10:50

Nov
6
comment Minimizing maximum absolute column sum norm of the residual between a matrix and its $k$-rank approximation
Thank you very much for the comment. Actually, this was the problem we were discussing in our reading group. That's why I wanted to learn if there's an already known way to solve it.
Oct
31
revised Minimizing maximum absolute column sum norm of the residual between a matrix and its $k$-rank approximation
added 12 characters in body; edited tags
Oct
27
awarded  Tumbleweed
Oct
20
asked Minimizing maximum absolute column sum norm of the residual between a matrix and its $k$-rank approximation
Aug
29
awarded  Yearling
Jun
10
accepted $l_1$ distance of a point to a convex polygon
Jun
9
asked $l_1$ distance of a point to a convex polygon
Feb
3
awarded  Nice Question
Jan
2
comment What does it mean to select $O(k \log k / \epsilon^2)$ indices?
Actually, I know Big-O notation and asymptotic analysis well. But this is a different case. In algorithm analysis, we compute the complexity given the array has size N. For example we may have 2 additions in a loop, then the result will be 2 times the loop count. It is OK. Coefficient 2 is not leading here and we are not setting something to the complexity here. But in the question, I need to set some variable which is computed in Big-O notation. This is confusing part.
Jan
2
comment What does it mean to select $O(k \log k / \epsilon^2)$ indices?
I think I will go for this.
Dec
30
asked What does it mean to select $O(k \log k / \epsilon^2)$ indices?
Dec
4
awarded  Scholar
Dec
4
accepted Sum of derivatives of a polynomial
Dec
4
awarded  Editor
Dec
4
revised Sum of derivatives of a polynomial
edited title
Dec
4
asked Sum of derivatives of a polynomial
Nov
20
awarded  Benefactor
Nov
20
comment Exciting games and material to motivate children to math
I gave +1 for all answers, which are very good recommendations. But I gave the bounty for this answer since it had the most upvotes and was very amazing. As a note, I didn't accept any answer to welcome further contributions since any upcoming answer may help to instructors who want to have a similar lecture with the kids.
Nov
18
awarded  Nice Question
Nov
14
comment Exciting games and material to motivate children to math
I was planning to use it actually because it is a good demonstration of showing what overestimation of math can lead to.