132 reputation
8
bio website
location Israel
age 32
visits member for 2 years, 6 months
seen Nov 7 '13 at 7:01

Finding my way in the world of computer vision...


Sep
24
awarded  Autobiographer
Sep
9
awarded  Popular Question
Sep
15
revised mutual information for power low distributed data?
edited title
Sep
15
asked mutual information for power low distributed data?
Aug
29
accepted compering distances between points in different dimension
Aug
29
comment compering distances between points in different dimension
I think I can assume that things live in the higher dim and treat other entries as zero, depending on the distance metric I'm using.
Aug
28
revised compering distances between points in different dimension
added 1 characters in body
Aug
28
comment compering distances between points in different dimension
I don't think of the data as n-dim (where n is the largest dimension) and the rest of the data is missing. My data has many features in different dimensions. Does it makes any difference ?
Aug
27
comment compering distances between points in different dimension
Hi, The scales are quite the same, but if two 12-dim points are very close isn't that more "powerful" then two 2-dim points with the same distance? does it matter what metric I'm using? in this case spearman and cosine
Aug
27
asked compering distances between points in different dimension
Jul
15
comment Approximating a function
ok, say the case is: a = {-1,0,1}, X = {2,3,5}, where X1 = (1+1), X2= (1+2) , X3=(3+2): then f is: -1*2 + 0*3 + 1*5 = 3. g is: 1*(2+3+5) ? or some kind of optimization is still required here?
Jul
15
comment Approximating a function
Hi, thank you for your edit, I just find it hard to understand how g approximates f, the expression ∑i=1n∑j=1mxi,j equals to X1 + X2 +...Xn? could you please give a more detailed explanation ? thanks!
Jul
14
comment Approximating a function
I'm not sure I understand... the series is finite, should that matter?
Jul
14
comment Approximating a function
Hi, My problem is not the programming language, rather than the method I use, mathematically. I want some kind of approximation because I want the computation be independent of the size of the variables. The code is very straight forward of course. I'm looking to avoid the multiplications or minimize them as possible, or something similar.
Jul
14
awarded  Commentator
Jul
14
comment Approximating a function
Hi, thank you for your comment, I edited my question, I hope it is better now... let me know.
Jul
14
revised Approximating a function
added 162 characters in body
Jul
14
asked Approximating a function
Mar
4
accepted ellipse equation from eigenvectors and eigenvalues
Mar
4
comment ellipse equation from eigenvectors and eigenvalues
It took me a while.... BUT, thanks ! (The notation was a bit different from what I used to ...)