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odlgroup / odl

Operator Discretization Library https://odlgroup.github.io/odl/
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Add nuclear norm #690

Closed adler-j closed 7 years ago

adler-j commented 7 years ago

The nuclear norm is a norm on spaces of the form 

ProductSpace(ProductSpace(space, n), m)

See article:

Collaborative Total Variation: A General Framework for Vectorial TV Models

for more information.

chongchenmath commented 7 years ago

The nuclear norm is a norm of a matrix, which is the sum of singular values of the matrix. So here we need a matrix space.