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 Curious
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  • 3 votes cast
Jan
22
awarded  Curious
Oct
5
comment Finding a sparse convex combination of basis vectors
How do I find the feasible set efficiently?
Oct
4
comment Finding a sparse convex combination of basis vectors
How should LP be used here? The original problem is non-linear... And also, after obtaining the solution for $L=m+1$, does it make sense to just discard the smallest $\alpha$ values to get a smaller amount of non-zero elements?
Oct
3
comment Finding a sparse convex combination of basis vectors
Thanks, this could work for now. Ideally I would want to allow $L<M+1$ because $m$ can get to ~50 and $n$ to a few hundreds. Any idea how to approach that?
Oct
3
awarded  Editor
Oct
3
revised Finding a sparse convex combination of basis vectors
Corrected $\alpha$ dimensions.
Oct
2
asked Finding a sparse convex combination of basis vectors
Aug
8
comment Chain rule for multivariable functions confusion
Total derivatives notation is exactly what I needed for my problem! thanks :)
Aug
8
accepted Chain rule for multivariable functions confusion
Aug
8
comment Chain rule for multivariable functions confusion
I think I got the answer to the original question, but still can't tell what is $z$.. For example $f(x,y)=x+y=x+x^2$, where's $z$?
Aug
8
comment Chain rule for multivariable functions confusion
@J.M. If I understand correctly, you're basically saying that on the left side I used partial derivative instead of total? (meaning that it should have been ($\frac{df}{dx}$ rather than $\frac{\partial f}{\partial x}$)
Aug
8
comment Chain rule for multivariable functions confusion
What is variable $z$?
Aug
8
asked Chain rule for multivariable functions confusion
Jan
7
awarded  Supporter
Jan
7
accepted Dot product rules
Jan
7
asked Dot product rules
Dec
22
accepted Finding channel capacity of a combined channel
Dec
17
asked Finding channel capacity of a combined channel
Nov
11
accepted What is the capacity of a channel which doesn't allow subsequent 1's?
Nov
11
comment What is the capacity of a channel which doesn't allow subsequent 1's?
I think I'm starting to get it.. Thanks :)