Re: lsqnonneg

[Jordi Gutiérrez Hermoso]

2011/1/26 Jaana Tommiska <address@hidden>:
> which algorithm does lsqnonneg(A,b) use when A is underdermined? I
> suppose that lsqnonneg uses Lawson and Hanson's NNLS when A is
> overdetermined .

You can read the source yourself:

     
http://hg.savannah.gnu.org/hgweb/octave/file/tip/scripts/optimization/lsqnonneg.m

It doesn't seem to be using a special method for underdetermined
systems. Should it be? Is a patch needed?

- Jordi G. H.