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seen Nov 26 '13 at 8:21

Dec
14
awarded  Yearling
Nov
25
comment What is the sub-gradient of $\lVert x- abs( x )\rVert_2^2$
For better understanding, I have updated the question to vector version.
Nov
25
revised What is the sub-gradient of $\lVert x- abs( x )\rVert_2^2$
deleted 81 characters in body; edited tags; edited title
Nov
25
revised What is the sub-gradient of $\lVert x- abs( x )\rVert_2^2$
added 7 characters in body; edited title
Nov
20
comment What is the sub-gradient of $\lVert x- abs( x )\rVert_2^2$
@AlexR Thanks, its updated.
Nov
20
revised What is the sub-gradient of $\lVert x- abs( x )\rVert_2^2$
added 95 characters in body
Nov
20
asked What is the sub-gradient of $\lVert x- abs( x )\rVert_2^2$
Sep
25
asked Estimating/Reconstructing the distance matrix by given pairwise distance of a subset of points
Aug
22
comment Are matrix p-norms unitary invariant?
Thanks very much its a very nice answer !
Aug
22
accepted Are matrix p-norms unitary invariant?
Aug
16
comment Are matrix p-norms unitary invariant?
@JyrkiLahtonen Sorry I forget to compute it on an arbitrary case first. Its not unitary invariant. I will close this question.
Aug
16
asked Are matrix p-norms unitary invariant?
Aug
16
comment Derivative of $(x^TAx)^2$
@AmitKumarGupta I have tried to use chain rule but I am a bit confuse on its usage and not sure if I am using it correctly. Thanks for your answer thou.
Aug
16
accepted Derivative of $(x^TAx)^2$
Aug
13
revised Derivative of $(x^TAx)^2$
deleted 2 characters in body
Aug
13
asked Derivative of $(x^TAx)^2$
Jul
18
accepted Derivative of $f(x) = e^{a^Tx}$
Jul
17
comment Derivative of $f(x) = e^{a^Tx}$
@GitGud Updated. Thanks for your correction :)
Jul
17
revised Derivative of $f(x) = e^{a^Tx}$
added 26 characters in body
Jul
17
comment Derivative of $f(x) = e^{a^Tx}$
@GitGud May I know what are the differences?