A second-order accurate, operator splitting scheme for reaction-diffusion systems in an energetic variational formulation
A second-order accurate in time, positivity-preserving, and unconditionally energy stable
operator splitting scheme is proposed and analyzed for reaction-diffusion systems with the …
operator splitting scheme is proposed and analyzed for reaction-diffusion systems with the …
Aggregation-diffusion to constrained interaction: minimizers & gradient flows in the slow diffusion limit
K Craig, I Topaloglu - Annales de l'Institut Henri Poincaré C, 2020 - ems.press
Inspired by recent work on minimizers and gradient flows of constrained interaction
energies, we prove that these energies arise as the slow diffusion limit of well-known …
energies, we prove that these energies arise as the slow diffusion limit of well-known …
A first-order computational algorithm for reaction-diffusion type equations via primal-dual hybrid gradient method
We propose an easy-to-implement iterative method for resolving the implicit (or semi-
implicit) schemes arising in solving reaction-diffusion (RD) type equations. We formulate the …
implicit) schemes arising in solving reaction-diffusion (RD) type equations. We formulate the …
A tumor growth model of Hele-Shaw type as a gradient flow
S Di Marino, L Chizat - ESAIM: Control, Optimisation and Calculus of …, 2020 - esaim-cocv.org
In this paper, we characterize a degenerate PDE as the gradient flow in the space of
nonnegative measures endowed with an optimal transport-growth metric. The PDE of …
nonnegative measures endowed with an optimal transport-growth metric. The PDE of …
Darcy's law with a source term
We introduce a novel variant of the JKO scheme to approximate Darcy's law with a pressure
dependent source term. By introducing a new variable that implicitly controls the source …
dependent source term. By introducing a new variable that implicitly controls the source …
Spherical Hellinger--Kantorovich Gradient Flows
S Kondratyev, D Vorotnikov - SIAM Journal on Mathematical Analysis, 2019 - SIAM
We study nonlinear degenerate parabolic equations of Fokker--Planck type that can be
viewed as gradient flows with respect to the recently introduced spherical Hellinger …
viewed as gradient flows with respect to the recently introduced spherical Hellinger …
Dpvi: A dynamic-weight particle-based variational inference framework
The recently developed Particle-based Variational Inference (ParVI) methods drive the
empirical distribution of a set of\emph {fixed-weight} particles towards a given target …
empirical distribution of a set of\emph {fixed-weight} particles towards a given target …
On the symmetries in the dynamics of wide two-layer neural networks
K Hajjar, L Chizat - arXiv preprint arXiv:2211.08771, 2022 - arxiv.org
We consider the idealized setting of gradient flow on the population risk for infinitely wide
two-layer ReLU neural networks (without bias), and study the effect of symmetries on the …
two-layer ReLU neural networks (without bias), and study the effect of symmetries on the …
[PDF][PDF] The Wasserstein–Fisher–Rao metric for waveform based earthquake location
In this paper, we apply the Wasserstein-Fisher-Rao (WFR) metric from the unbalanced
optimal transport theory to the earthquake location problem. Compared with the quadratic …
optimal transport theory to the earthquake location problem. Compared with the quadratic …
Simulation of multiphase porous media flows with minimising movement and finite volume schemes
C Cancès, T Gallouët, M Laborde… - European Journal of …, 2019 - cambridge.org
The Wasserstein gradient flow structure of the partial differential equation system governing
multiphase flows in porous media was recently highlighted in Cancès et al.[Anal. PDE10 (8) …
multiphase flows in porous media was recently highlighted in Cancès et al.[Anal. PDE10 (8) …