no code implementations • 9 Dec 2023 • Marvin Schmitt, Valentin Pratz, Ullrich Köthe, Paul-Christian Bürkner, Stefan T Radev
Simulation-based inference (SBI) is constantly in search of more expressive algorithms for accurately inferring the parameters of complex models from noisy data.
no code implementations • 17 Nov 2023 • Marvin Schmitt, Stefan T. Radev, Paul-Christian Bürkner
We present multimodal neural posterior estimation (MultiNPE), a method to integrate heterogeneous data from different sources in simulation-based inference with neural networks.
no code implementations • 17 Oct 2023 • Lasse Elsemüller, Hans Olischläger, Marvin Schmitt, Paul-Christian Bürkner, Ullrich Köthe, Stefan T. Radev
In this work, we propose sensitivity-aware amortized Bayesian inference (SA-ABI), a multifaceted approach to efficiently integrate sensitivity analyses into simulation-based inference with neural networks.
no code implementations • 6 Oct 2023 • Marvin Schmitt, Desi R. Ivanova, Daniel Habermann, Ullrich Köthe, Paul-Christian Bürkner, Stefan T. Radev
We propose a method to improve the efficiency and accuracy of amortized Bayesian inference by leveraging universal symmetries in the joint probabilistic model of parameters and data.
1 code implementation • 28 Jun 2023 • Stefan T Radev, Marvin Schmitt, Lukas Schumacher, Lasse Elsemüller, Valentin Pratz, Yannik Schälte, Ullrich Köthe, Paul-Christian Bürkner
Modern Bayesian inference involves a mixture of computational techniques for estimating, validating, and drawing conclusions from probabilistic models as part of principled workflows for data analysis.
3 code implementations • 17 Feb 2023 • Stefan T. Radev, Marvin Schmitt, Valentin Pratz, Umberto Picchini, Ullrich Köthe, Paul-Christian Bürkner
This work proposes ``jointly amortized neural approximation'' (JANA) of intractable likelihood functions and posterior densities arising in Bayesian surrogate modeling and simulation-based inference.
1 code implementation • 13 Oct 2022 • Marvin Schmitt, Stefan T. Radev, Paul-Christian Bürkner
Bayesian model comparison (BMC) offers a principled probabilistic approach to study and rank competing models.
2 code implementations • 16 Dec 2021 • Marvin Schmitt, Paul-Christian Bürkner, Ullrich Köthe, Stefan T. Radev
Neural density estimators have proven remarkably powerful in performing efficient simulation-based Bayesian inference in various research domains.