Search Results for author: Andreas Gerhardus

Found 7 papers, 3 papers with code

Non-parametric Conditional Independence Testing for Mixed Continuous-Categorical Variables: A Novel Method and Numerical Evaluation

no code implementations17 Oct 2023 Oana-Iuliana Popescu, Andreas Gerhardus, Jakob Runge

One approach computes distances by a one-hot encoding of the categorical variables, essentially treating categorical variables as discrete-numerical, while the other expresses CMI by entropy terms where the categorical variables appear as conditions only.

Causal Discovery Variable Selection

Projecting infinite time series graphs to finite marginal graphs using number theory

no code implementations9 Oct 2023 Andreas Gerhardus, jonas Wahl, Sofia Faltenbacher, Urmi Ninad, Jakob Runge

In this work, we develop a method for projecting infinite time series graphs with repetitive edges to marginal graphical models on a finite time window.

Causal Discovery Causal Inference +1

Bootstrap aggregation and confidence measures to improve time series causal discovery

1 code implementation15 Jun 2023 Kevin Debeire, Jakob Runge, Andreas Gerhardus, Veronika Eyring

It can be combined with a range of time series causal discovery methods and provides a measure of confidence for the links of the time series graphs.

Causal Discovery Time Series

Discovering Causal Relations and Equations from Data

no code implementations21 May 2023 Gustau Camps-Valls, Andreas Gerhardus, Urmi Ninad, Gherardo Varando, Georg Martius, Emili Balaguer-Ballester, Ricardo Vinuesa, Emiliano Diaz, Laure Zanna, Jakob Runge

Discovering equations, laws and principles that are invariant, robust and causal explanations of the world has been fundamental in physical sciences throughout the centuries.

Philosophy

Selecting Robust Features for Machine Learning Applications using Multidata Causal Discovery

1 code implementation11 Apr 2023 Saranya Ganesh S., Tom Beucler, Frederick Iat-Hin Tam, Milton S. Gomez, Jakob Runge, Andreas Gerhardus

We apply our framework to the statistical intensity prediction of Western Pacific Tropical Cyclones (TC), for which it is often difficult to accurately choose drivers and their dimensionality reduction (time lags, vertical levels, and area-averaging).

Causal Discovery Dimensionality Reduction +3

Characterization of causal ancestral graphs for time series with latent confounders

no code implementations15 Dec 2021 Andreas Gerhardus

In this paper, we introduce a novel class of graphical models for representing time lag specific causal relationships and independencies of multivariate time series with unobserved confounders.

Causal Discovery Time Series +1

High-recall causal discovery for autocorrelated time series with latent confounders

1 code implementation NeurIPS 2020 Andreas Gerhardus, Jakob Runge

We show that existing causal discovery methods such as FCI and variants suffer from low recall in the autocorrelated time series case and identify low effect size of conditional independence tests as the main reason.

Causal Discovery Time Series +2

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