no code implementations • 1 Oct 2023 • T. Mitchell Roddenberry, Vishwanath Saragadam, Maarten V. de Hoop, Richard G. Baraniuk
Implicit neural representations (INRs) have arisen as useful methods for representing signals on Euclidean domains.
1 code implementation • 14 Jul 2023 • Cheng Shi, Maarten V. de Hoop, Ivan Dokmanić
Existing techniques relying on coarsely approximated, fixed wave speed models fail in this unexplored dense regime where the complexity of unknown wave speed cannot be ignored.
no code implementations • 25 May 2023 • Ali Siahkoohi, Rudy Morel, Randall Balestriero, Erwan Allys, Grégory Sainton, Taichi Kawamura, Maarten V. de Hoop
This problem is inherently ill-posed and is further challenged by the variety of timescales exhibited by sources.
no code implementations • 24 Apr 2023 • Anastasis Kratsios, Chong Liu, Matti Lassas, Maarten V. de Hoop, Ivan Dokmanić
Motivated by the developing mathematics of deep learning, we build universal functions approximators of continuous maps between arbitrary Polish metric spaces $\mathcal{X}$ and $\mathcal{Y}$ using elementary functions between Euclidean spaces as building blocks.
1 code implementation • 27 Jan 2023 • J. Antonio Lara Benitez, Takashi Furuya, Florian Faucher, Anastasis Kratsios, Xavier Tricoche, Maarten V. de Hoop
We conclude by proposing a hypernetwork version of the subfamily of NOs as a surrogate model for the mentioned forward operator.
1 code implementation • 27 Jan 2023 • Ali Siahkoohi, Rudy Morel, Maarten V. de Hoop, Erwan Allys, Grégory Sainton, Taichi Kawamura
Source separation involves the ill-posed problem of retrieving a set of source signals that have been observed through a mixing operator.
no code implementations • 27 Aug 2021 • Maarten V. de Hoop, Nikola B. Kovachki, Nicholas H. Nelsen, Andrew M. Stuart
This paper studies the learning of linear operators between infinite-dimensional Hilbert spaces.
no code implementations • 23 Feb 2021 • Maarten V. de Hoop, Joonas Ilmavirta, Matti Lassas, Teemu Saksala
If we know all the arrival times at the boundary cylinder of the spacetime, can we reconstruct the space, a Riemannian manifold with boundary?
Differential Geometry Analysis of PDEs Metric Geometry
no code implementations • 23 Dec 2019 • Maarten V. de Hoop, Matti Lassas, Christopher A. Wong
Lastly, we discuss how operator recurrent networks can be viewed as a deep learning analogue to deterministic algorithms such as boundary control for reconstructing the unknown wavespeed in the acoustic wave equation from boundary measurements.
no code implementations • 12 Dec 2019 • Hope Jasperson, David C. Bolton, Paul Johnson, Robert Guyer, Chris Marone, Maarten V. de Hoop
Our data were generated in a laboratory setting using a biaxial shearing device with granular fault gouge intended to mimic the conditions of tectonic faults.
2 code implementations • 25 Jun 2019 • Jia Shi, Ruipeng Li, Yuanzhe Xi, Yousef Saad, Maarten V. de Hoop
A Continuous Galerkin method-based approach is presented to compute the seismic normal modes of rotating planets.
Computational Physics Earth and Planetary Astrophysics Geophysics 86-08, 86-04, 85-04, 85-08, 85-10, 15A18, 65N25, 65N30
1 code implementation • ICLR 2019 • Sidharth Gupta, Konik Kothari, Maarten V. de Hoop, Ivan Dokmanić
We show that in this case the common approach to directly learn the mapping from the measured data to the reconstruction becomes unstable.