Search Results for author: Luisa Lucie-Smith

Found 8 papers, 4 papers with code

Explaining dark matter halo density profiles with neural networks

no code implementations4 May 2023 Luisa Lucie-Smith, Hiranya V. Peiris, Andrew Pontzen

We use explainable neural networks to connect the evolutionary history of dark matter halos with their density profiles.

A robust estimator of mutual information for deep learning interpretability

1 code implementation31 Oct 2022 Davide Piras, Hiranya V. Peiris, Andrew Pontzen, Luisa Lucie-Smith, Ningyuan Guo, Brian Nord

We develop the use of mutual information (MI), a well-established metric in information theory, to interpret the inner workings of deep learning models.

Disentanglement

Insights into the origin of halo mass profiles from machine learning

no code implementations9 May 2022 Luisa Lucie-Smith, Susmita Adhikari, Risa H. Wechsler

We find two primary scales in the initial conditions (ICs) that impact the final mass profile: the density at approximately the scale of the haloes' Lagrangian patch $R_L$ ($R\sim 0. 7\, R_L$) and that in the large-scale environment ($R\sim 1. 7~R_L$).

BIG-bench Machine Learning Interpretable Machine Learning

Discovering the building blocks of dark matter halo density profiles with neural networks

no code implementations16 Mar 2022 Luisa Lucie-Smith, Hiranya V. Peiris, Andrew Pontzen, Brian Nord, Jeyan Thiyagalingam, Davide Piras

The additional dimension in the representation contains information about the infalling material in the outer profiles of dark matter halos, thus discovering the splashback boundary of halos without prior knowledge of the halos' dynamical history.

Deep learning insights into cosmological structure formation

2 code implementations20 Nov 2020 Luisa Lucie-Smith, Hiranya V. Peiris, Andrew Pontzen, Brian Nord, Jeyan Thiyagalingam

We train a three-dimensional convolutional neural network (CNN) to predict the mass of dark matter halos from the initial conditions, and quantify in full generality the amounts of information in the isotropic and anisotropic aspects of the initial density field about final halo masses.

An interpretable machine learning framework for dark matter halo formation

1 code implementation14 Jun 2019 Luisa Lucie-Smith, Hiranya V. Peiris, Andrew Pontzen

The addition of tidal shear information does not yield an improved halo collapse model over one based on density information alone; the difference in their predictive performance is consistent with the statistical uncertainty of the density-only based model.

Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics

Machine learning cosmological structure formation

1 code implementation12 Feb 2018 Luisa Lucie-Smith, Hiranya V. Peiris, Andrew Pontzen, Michelle Lochner

We train a machine learning algorithm to learn cosmological structure formation from N-body simulations.

Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics

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