A new data-driven probabilistic fatigue life prediction framework informed by experiments and multiscale simulation

Z Liang, X Wang, Y Cui, W Xu, Y Zhang, Y He - International Journal of …, 2023 - Elsevier
Traditional probabilistic fatigue life test requires long time, a large number of samples and
high cost due to dispersion, randomness and complexity. A new data-driven probabilistic …

Field-level simulation-based inference of galaxy clustering with convolutional neural networks

P Lemos, L Parker, CH Hahn, S Ho, M Eickenberg… - Physical Review D, 2024 - APS
We present the first simulation-based inference (SBI) of cosmological parameters from field-
level analysis of galaxy clustering. Standard galaxy clustering analyses rely on analyzing …

SimBIG: mock challenge for a forward modeling approach to galaxy clustering

CH Hahn, M Eickenberg, S Ho, J Hou… - … of Cosmology and …, 2023 - iopscience.iop.org
Abstract Simulation-Based Inference of Galaxies (SimBIG) is a forward modeling framework
for analyzing galaxy clustering using simulation-based inference. In this work, we present …

Scalable inference with autoregressive neural ratio estimation

N Anau Montel, J Alvey… - Monthly Notices of the …, 2024 - academic.oup.com
In recent years, there has been a remarkable development of simulation-based inference
(SBI) algorithms, and they have now been applied across a wide range of astrophysical and …

Fast and robust Bayesian inference using Gaussian processes with GPry

J El Gammal, N Schöneberg, J Torrado… - Journal of Cosmology …, 2023 - iopscience.iop.org
We present the GPry algorithm for fast Bayesian inference of general (non-Gaussian)
posteriors with a moderate number of parameters. GPry does not need any pre-training …

Adversarial robustness of amortized Bayesian inference

M Gloeckler, M Deistler, JH Macke - arXiv preprint arXiv:2305.14984, 2023 - arxiv.org
Bayesian inference usually requires running potentially costly inference procedures
separately for every new observation. In contrast, the idea of amortized Bayesian inference …

Improving convolutional neural networks for cosmological fields with random permutation

K Zhong, M Gatti, B Jain - Physical Review D, 2024 - APS
Convolutional neural networks (CNNs) have recently been applied to cosmological fields—
weak lensing mass maps and Galaxy maps. However, cosmological maps differ in several …

Cosmological constraints from non-Gaussian and nonlinear galaxy clustering using the SimBIG inference framework

CH Hahn, P Lemos, L Parker… - Nature …, 2024 - nature.com
The standard Λ CDM cosmological model predicts the presence of cold dark matter, with the
current accelerated expansion of the Universe driven by dark energy. This model has …

Dark energy by natural evolution: Constraining dark energy using Approximate Bayesian Computation

RC Bernardo, D Grandón, JL Said… - Physics of the Dark …, 2023 - Elsevier
We look at dark energy from a biology inspired viewpoint by means of the Approximate
Bayesian Computation (ABC) and late time cosmological observations. We find that …

Constraining cosmological parameters with needlet internal linear combination maps. II. Likelihood-free inference on needlet internal linear combination power …

KM Surrao, JC Hill - Physical Review D, 2024 - APS
Standard cosmic microwave background (CMB) analyses constrain cosmological and
astrophysical parameters by fitting parametric models to multifrequency power spectra …