## On efficiently solving the subproblems of a level-set method for fused lasso problems

In applying the level-set method developed in [Van den Berg and Friedlander, SIAM J. on Scientific Computing, 31 (2008), pp.~890–912 and SIAM J. on Optimization, 21 (2011), pp.~1201–1229] to solve the fused lasso problems, one needs to solve a sequence of regularized least squares subproblems. In order to make the level-set method practical, we develop … Read more