code for LINEARLY-CONSTRAINED NONSMOOTH OPTIMIZATION FOR TRAINING AUTOENCODERS
SIAM Journal on Optimization: https://epubs.siam.org/doi/pdf/10.1137/21M1408713?casa_token=BNOivJTE1I4AAAAA:kf3GITv5TqwObh096boAsgKNI8nQxE2ODwsa4QGj532Rs8nxqdyr9JkUWedN7wvNZ3bWQ3AuHQ
run SPG_vs_adadelta.m