Search Results for author: Frank Schäfer

Found 8 papers, 6 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

Differentiating Metropolis-Hastings to Optimize Intractable Densities

1 code implementation13 Jun 2023 Gaurav Arya, Ruben Seyer, Frank Schäfer, Kartik Chandra, Alexander K. Lew, Mathieu Huot, Vikash K. Mansinghka, Jonathan Ragan-Kelley, Christopher Rackauckas, Moritz Schauer

We develop an algorithm for automatic differentiation of Metropolis-Hastings samplers, allowing us to differentiate through probabilistic inference, even if the model has discrete components within it.

Automatic Differentiation of Programs with Discrete Randomness

1 code implementation16 Oct 2022 Gaurav Arya, Moritz Schauer, Frank Schäfer, Chris Rackauckas

Automatic differentiation (AD), a technique for constructing new programs which compute the derivative of an original program, has become ubiquitous throughout scientific computing and deep learning due to the improved performance afforded by gradient-based optimization.

AbstractDifferentiation.jl: Backend-Agnostic Differentiable Programming in Julia

1 code implementation25 Sep 2021 Frank Schäfer, Mohamed Tarek, Lyndon White, Chris Rackauckas

No single Automatic Differentiation (AD) system is the optimal choice for all problems.

Control of Stochastic Quantum Dynamics by Differentiable Programming

1 code implementation4 Jan 2021 Frank Schäfer, Pavel Sekatski, Martin Koppenhöfer, Christoph Bruder, Michal Kloc

We apply this approach to the state preparation and stabilization of a qubit subjected to homodyne detection.

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

Divergence of predictive model output as indication of phase transitions

1 code implementation3 Dec 2018 Frank Schäfer, Niels Lörch

We introduce a new method to identify phase boundaries in physical systems.

Statistical Mechanics Disordered Systems and Neural Networks Quantum Physics

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