0th norm in cvx or number of non-zero elements

MIDCP
Feb 25, 2018
H
#1

I have a condition says 0th norm = no. of non-zero elements of w = 5
how I can implement it in cvx?

M
#2

You’ll have to use the mixed integer DCP (MIDCP) capability of CVX, if it can be done. It may require some effort on your part, which will depend on the context.