About

I'm a fourth-year PhD candidate in Industrial and Systems Engineering (Lehigh ISE) at Lehigh University, advised by Professor Akwum Onwunta. My dissertation, PDEs and Machine Learning with Applications in Imaging, develops optimization and deep learning methods for inverse problems and imaging.

Before Lehigh, I earned a Master's degree in Mathematical Sciences from the African Institute for Mathematical Sciences (AIMS) in Rwanda, and a Bachelor's degree in Pure and Applied Mathematics from Ladoke Akintola University of Technology (LAUTECH) in Ogbomoso, Nigeria.

I served as President of the Lehigh INFORMS Student Chapter for 2025–2026, and as Vice President and Treasurer of the Lehigh University Graduate Association of Nigerian Students.

Education

Ph.D. in Industrial and Systems Engineering
2023 – present · Lehigh University, USA

Advisor: Prof. Akwum Onwunta. Dissertation: PDEs and Machine Learning with Applications in Medical Imaging.

M.Sc. in Mathematical Sciences
2021 – 2022 · African Institute for Mathematical Sciences, Rwanda

Advisor: Prof. Dedunje Biatat V.A. Thesis: Artificial Neural Networks Under Constraint.

B.Tech. in Pure and Applied Mathematics
2013 – 2019 · Ladoke Akintola University of Technology, Nigeria

Grade: 4.52/5.0. First Class Honors.

Research Interests

Mathematical optimization · Scientific computing · Machine learning · Inverse problems · Medical imaging · Partial differential equations

Selected Publications

Deep learning methods for inverse problems using connections between proximal operators and Hamilton–Jacobi equations
Oluwatosin Akande, Gabriel P. Langlois, Akwum Onwunta
Under second review at SIAM Journal on Applied Mathematics, 2025 · arXiv:2512.23829
Momentum-based minimization of the Ginzburg–Landau functional on Euclidean spaces and graphs
Oluwatosin Akande, Patrick Dondl, Kanan Gupta, Akwum Onwunta, Stephan Wojtowytsch
Under review at Journal of Computational Physics, 2024 · arXiv:2501.00389

All publications →

Ongoing Projects

Learned Proximal Networks

Learning proximal operators directly with input-convex neural networks, and using the learned prior for reconstruction in inverse problems.

Learned Proximal Networks for High-Dimensional Hamilton–Jacobi PDEs

Learning a convex potential whose gradient is the proximal operator, then recovering the prior without per-query inversion.

All projects →