@inproceedings{le:hal-03438881, TITLE = {{Fast learning of fast transforms, with guarantees}}, AUTHOR = {Le, Quoc-Tung and Zheng, L{\'e}on and Riccietti, Elisa and Gribonval, R{\'e}mi}, URL = {https://inria.hal.science/hal-03438881}, NOTE = {This paper is associated to code for reproducible research available at https://hal.inria.fr/hal-03552956}, BOOKTITLE = {{ICASSP 2022 - IEEE International Conference on Acoustics, Speech and Signal Processing}}, ADDRESS = {Singapore, Singapore}, YEAR = {2022}, MONTH = May, DOI = {10.1109/ICASSP43922.2022.9747791}, KEYWORDS = {Matrix factorization ; Sparsity ; Butterfly structure ; Hierarchical factorization ; NP-hardness}, PDF = {https://inria.hal.science/hal-03438881v2/file/main.pdf}, HAL_ID = {hal-03438881}, HAL_VERSION = {v2}, }