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Oct
18
awarded  Popular Question
Sep
10
revised How to simplify $(aX+D)^{-1}$
added 172 characters in body
Sep
10
comment How to simplify $(aX+D)^{-1}$
Thanks for pointing this out. Yet I am not looking at rank one matrix so the answer provided may not be helpful at all.
Sep
10
comment How to simplify $(aX+D)^{-1}$
@Deliasaghi Thanks for the reference but I am not looking at rank one matrix
Sep
10
revised How to simplify $(aX+D)^{-1}$
added 12 characters in body
Sep
10
comment Creating a sparse matrix from a dense matrix
Are you actually asking about how to do dimensionality reduction? If yes you can check PCA
Sep
10
asked How to simplify $(aX+D)^{-1}$
Aug
5
comment Which function is suitable to approximate a convex piecewise linear function
@BrianTung Can you provide me those candidate functions which you think is suitable in this case?
Aug
5
revised Which function is suitable to approximate a convex piecewise linear function
added 10 characters in body
Aug
5
comment Which function is suitable to approximate a convex piecewise linear function
Yes $a_i$ is always greater than $0$. But apart from that I think there is nothing more I can add.
Aug
5
comment Which function is suitable to approximate a convex piecewise linear function
@BrianTung Thanks. Ive added more details about the piecewise linear function
Aug
5
revised Which function is suitable to approximate a convex piecewise linear function
added 169 characters in body
Aug
5
asked Which function is suitable to approximate a convex piecewise linear function
Apr
17
awarded  Popular Question
Feb
7
awarded  Famous Question
Sep
5
awarded  Popular Question
Jul
2
awarded  Curious
Jul
2
awarded  Inquisitive
Jun
23
accepted Is Minimax equals to Maximin?
Jun
20
revised Is Minimax equals to Maximin?
added 1 character in body