Search Results for author: Julian Arnold

Found 4 papers, 2 papers with code

Machine learning phase transitions: Connections to the Fisher information

no code implementations17 Nov 2023 Julian Arnold, Niels Lörch, Flemming Holtorf, Frank Schäfer

Despite the widespread use and success of machine-learning techniques for detecting phase transitions from data, their working principle and fundamental limits remain elusive.

Fast Detection of Phase Transitions with Multi-Task Learning-by-Confusion

no code implementations15 Nov 2023 Julian Arnold, Frank Schäfer, Niels Lörch

Up to now, the scheme required training a distinct binary classifier for each possible splitting of the grid into two sides, resulting in a computational cost that scales linearly with the number of grid points.

Multi-Task Learning

Machine Learning Product State Distributions from Initial Reactant States for a Reactive Atom-Diatom Collision System

1 code implementation5 Nov 2021 Julian Arnold, Juan Carlos San Vicente Veliz, Debasish Koner, Narendra Singh, Raymond J. Bemish, Markus Meuwly

Overall, the prediction accuracy as quantified by the root-mean-squared difference $(\sim 0. 003)$ and the $R^2$ $(\sim 0. 99)$ between the reference QCT and predictions of the STD model is high for the test set and off-grid state specific initial conditions and for initial conditions drawn from reactant state distributions characterized by translational, rotational and vibrational temperatures.

Interpretable and unsupervised phase classification

1 code implementation9 Oct 2020 Julian Arnold, Frank Schäfer, Martin Žonda, Axel U. J. Lode

Fully automated classification methods that yield direct physical insights into phase diagrams are of current interest.

Disordered Systems and Neural Networks Strongly Correlated Electrons Quantum Physics

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