Search Results for author: Marvin Schmitt

Found 8 papers, 4 papers with code

Consistency Models for Scalable and Fast Simulation-Based Inference

no code implementations9 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.

Denoising

Fuse It or Lose It: Deep Fusion for Multimodal Simulation-Based Inference

no code implementations17 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.

Sensitivity-Aware Amortized Bayesian Inference

no code implementations17 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.

Bayesian Inference Decision Making

Leveraging Self-Consistency for Data-Efficient Amortized Bayesian Inference

no code implementations6 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.

Bayesian Inference

BayesFlow: Amortized Bayesian Workflows With Neural Networks

1 code implementation28 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.

Bayesian Inference Data Compression

JANA: Jointly Amortized Neural Approximation of Complex Bayesian Models

3 code implementations17 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.

Time Series Time Series Analysis

Meta-Uncertainty in Bayesian Model Comparison

1 code implementation13 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.

Detecting Model Misspecification in Amortized Bayesian Inference with Neural Networks

2 code implementations16 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.

Bayesian Inference Decision Making +1

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