![](/images/team/zevwoodstock.jpg)
Zev Woodstock
I research nonsmooth optimization, splitting algorithms, machine learning, and monotone operator theory. My collaborators and I develop these tools to solve nonlinear problems in data science, signal/image/audio processing, and large-scale optimization.
📬 Contact
- office
- Room 3107 at ZIB
- woodstock (at) zib.de
- homepage
- zevwoodstock.github.io
🎓 Curriculum vitae
- 2022 to 2024
- Researcher at ZIB
- May 2021
- Ph.D. in Mathematics at NC State
- Jan 2018
- M.Sc. in Applied Mathematics at NC State
- May 2016
- B.Sc. in Mathematics at JMU
đź“ť Publications and preprints
Preprints
- Woodstock, Z., and Pokutta, S. (2023). Splitting the Conditional Gradient Algorithm.
[arXiv]
[BibTeX]
@misc{splitcg2023, archiveprefix = {arXiv}, eprint = {2311.05381}, primaryclass = {math.OC}, year = {2023}, author = {Woodstock, Zev and Pokutta, Sebastian}, title = {Splitting the Conditional Gradient Algorithm} }
Conference proceedings
- Búi, M. N., Combettes, P. L., and Woodstock, Z. (2022). Block-activated Algorithms for Multicomponent Fully Nonsmooth Minimization. Proceedings of ICASSP 2022 - 2022 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 5428–5432.
DOI: 10.1109/ICASSP43922.2022.9747479
[URL]
[BibTeX]
@inproceedings{Block22, year = {2022}, booktitle = {Proceedings of ICASSP 2022 - 2022 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)}, month = may, pages = {5428-5432}, doi = {10.1109/ICASSP43922.2022.9747479}, url = {https://zevwoodstock.github.io/media/publications/icassp2022-2.pdf}, author = {BĂşi, M. N. and Combettes, P. L. and Woodstock, Zev}, title = {Block-activated Algorithms for Multicomponent Fully Nonsmooth Minimization} }
- Combettes, P. L., and Woodstock, Z. (2022). Signal Recovery From Inconsistent Nonlinear Observations. Proceedings of ICASSP 2022 - 2022 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 5872–5876.
DOI: 10.1109/ICASSP43922.2022.9746145
[BibTeX]
@inproceedings{inconsistentFN, year = {2022}, booktitle = {Proceedings of ICASSP 2022 - 2022 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)}, month = may, pages = {5872–5876}, doi = {10.1109/ICASSP43922.2022.9746145}, author = {Combettes, P. L. and Woodstock, Zev}, title = {Signal Recovery From Inconsistent Nonlinear Observations} }
- Combettes, P. L., and Woodstock, Z. (2021). A Fixed Point Framework for Recovering Signals From Nonlinear Transformations. Proceedings of 2020 28th European Signal Processing Conference (EUSIPCO), 2120–2124.
DOI: 10.23919/Eusipco47968.2020.9287736
[BibTeX]
@inproceedings{eusipco21, year = {2021}, booktitle = {Proceedings of 2020 28th European Signal Processing Conference (EUSIPCO)}, month = jan, pages = {2120-2124}, doi = {10.23919/Eusipco47968.2020.9287736}, author = {Combettes, P. L. and Woodstock, Zev}, title = {A Fixed Point Framework for Recovering Signals From Nonlinear Transformations} }
- Lubert, C. P., Romero, J. N., Sochacki, J. S., and Woodstock, Z. (2016). Rocket Launch Noise and the Coanda Effect. Proceedings of American Institute of Aeronautics and Astronautics (AIAA) SPACE 2016, 5626.
DOI: 10.2514/6.2016-5625
[URL]
[BibTeX]
@inproceedings{coanda16, year = {2016}, booktitle = {Proceedings of American Institute of Aeronautics and Astronautics (AIAA) SPACE 2016}, month = sep, pages = {5626}, doi = {10.2514/6.2016-5625}, url = {https://zevwoodstock.github.io/media/publications/AIAA.pdf}, author = {Lubert, Caroline P. and Romero, Jon N. and Sochacki, James S. and Woodstock, Zev}, title = {Rocket Launch Noise and the Coanda Effect} }
Full articles
- Kreimeier, T., Pokutta, S., Walther, A., and Woodstock, Z. (2023). On a Frank-Wolfe Approach for Abs-smooth Functions. Optimization Methods and Software.
[arXiv]
[BibTeX]
@article{abssmooth-fw_2023, year = {2023}, journal = {Optimization Methods and Software}, archiveprefix = {arXiv}, eprint = {2303.09881}, primaryclass = {math.OC}, author = {Kreimeier, Timo and Pokutta, Sebastian and Walther, Andrea and Woodstock, Zev}, title = {On a Frank-Wolfe Approach for Abs-smooth Functions} }
- Combettes, P. L., and Woodstock, Z. (2022). A Variational Inequality Model for the Construction of Signals From Inconsistent Nonlinear Equations. SIAM Journal on Imaging Sciences, 15(1), 84–109.
DOI: 10.1137/21M1420368
[BibTeX]
@article{inconsistentVI, year = {2022}, journal = {SIAM Journal on Imaging Sciences}, volume = {15}, number = {1}, pages = {84–109}, doi = {10.1137/21M1420368}, author = {Combettes, P. L. and Woodstock, Zev}, title = {A Variational Inequality Model for the Construction of Signals From Inconsistent Nonlinear Equations} }
- Combettes, P. L., and Woodstock, Z. (2021). Reconstruction of Functions From Prescribed Proximal Points. Journal of Approximation Theory, 268(105606).
DOI: 10.1016/j.jat.2021.105606
[BibTeX]
@article{jat21, year = {2021}, journal = {Journal of Approximation Theory}, volume = {268}, number = {105606}, doi = {10.1016/j.jat.2021.105606}, author = {Combettes, P. L. and Woodstock, Zev}, title = {Reconstruction of Functions From Prescribed Proximal Points} }
- Lienkaemper, C., Shiu, A., and Woodstock, Z. (2017). Obstructions to Convexity in Neural Codes. Advances in Applied Mathematics, 85, 31–59.
DOI: 10.1016/j.aam.2016.11.006
[BibTeX]
@article{neuralcodes17, year = {2017}, journal = {Advances in Applied Mathematics}, volume = {85}, pages = {31--59}, doi = {10.1016/j.aam.2016.11.006}, author = {Lienkaemper, Caitlin and Shiu, Anne and Woodstock, Zev}, title = {Obstructions to Convexity in Neural Codes} }
- Félix, B., Shiu, A., and Woodstock, Z. (2016). Analyzing Multistationarity in Chemical Reaction Networks Using the Determinant Optimization Method. Applied Mathematics and Computation, 287–288, 60–73.
DOI: 10.1016/j.amc.2016.04.030
[BibTeX]
@article{detopt16, year = {2016}, journal = {Applied Mathematics and Computation}, volume = {287--288}, pages = {60--73}, doi = {10.1016/j.amc.2016.04.030}, author = {FĂ©lix, Bryan and Shiu, Anne and Woodstock, Zev}, title = {Analyzing Multistationarity in Chemical Reaction Networks Using the Determinant Optimization Method} }
- Lubert, C. P., and Woodstock, Z. (2014). Architectural Acoustical Oddities. The Journal of the Acoustical Society of America, 136(2126).
DOI: 10.1121/1.4899659
[BibTeX]
@article{acoustic15, year = {2014}, journal = {The Journal of the Acoustical Society of America}, volume = {136}, number = {2126}, doi = {10.1121/1.4899659}, author = {Lubert, Caroline P. and Woodstock, Zev}, title = {Architectural Acoustical Oddities} }
🔬 Projects
On a Frank-Wolfe Approach for Abs-smooth Optimization
Motivated by nonsmooth problems in machine learning, we solve the problem of minimizing an abs-smooth function subject to closed convex constraints. New theory and algorithms are developed using linear minimization oracles to enforce constraints and abs-linearization methods to handle nonsmoothness.
MATH+ EF1-23
Apr 2023 to Mar 2026
4
2
đź’¬ Talks and posters
Conference and workshop talks
- Oct 2023
- Splitting the Conditional Gradient Algorithm
INFORMS Conference, Phoenix [PDF]