CVX optimization with l21 norm

[Mark_L_Stone]

Read my answer to

Could L21 norm be built in objective function?

Hello Everyone! At present I am working with a project using Sparse Subspace coding technique. And I’m new to CVX. it is only the l21 norm which locates in the g() function i cannot write into the objective function. The l21 norm is defined as this [image]. Could it be solved by cvx? Or other toolbox recommendations? So any advice? Thanks ahead.