4 citations · 5 across the 10 of their papers we have counts for
3 papers · 1 filter
Weighted Group Lasso for a static EEG problem
Ole Løseth Elvetun, Bjørn Fredrik Nielsen, Niranjana Sudheer
We investigate the weighted Group Lasso formulation for the static inverse electroencephalography (EEG) problem, aiming at reconstructing the unknown underlying neuronal sources fr…
Weighted total variation regularization for inverse problems with significant null spaces
Martin Burger, Ole Løseth Elvetun, Bjørn Fredrik Nielsen
We consider inverse problems with large null spaces, which arise in important applications such as in inverse ECG and EEG procedures. Standard regularization methods typically prod…
Weighting operators for sparsity regularization
Ole Løseth Elvetun, Bjørn Fredrik Nielsen, Niranjana Sudheer
Standard regularization methods typically favor solutions which are in, or close to, the orthogonal complement of the null space of the forward operator/matrix . This p…