Author

David M. Bortz

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Preprint Sep 2026

From Individual Trajectories to Population Densities: Weak-Form Inference of Heterogeneous Growth Laws

Single-cell time-lapse microscopy now provides high-resolution size trajectories for thousands of individual cells, yet principled methods for simultaneously learning the functional form of growth laws and the distribution of cell-to-cell physiological variability remain limited. We present a data-driven framework base...

Rainey Lyons, Vanja Dukic, David M. Bortz · 0 citations

#machine learning Preprint Sep 2026

Tensor-Train Weak SINDy: Identifying High-Dimensional Nonlinear Dynamics

Weak Sparse Identification of Nonlinear Dynamics (WSINDy) provides a noise-robust approach for learning dynamical systems from data without requiring numerical differentiation. However, for high-dimensional systems, tensor-product libraries of candidate functions grow exponentially with the state dimension, making stan...

W. Houser, Vanja Dukic, David M. Bortz · 0 citations