Search Results for author: Nicolai Meinshausen

Found 26 papers, 12 papers with code

Distributional Principal Autoencoders

1 code implementation21 Apr 2024 Xinwei Shen, Nicolai Meinshausen

Dimension reduction techniques usually lose information in the sense that reconstructed data are not identical to the original data.

Engression: Extrapolation for Nonlinear Regression?

1 code implementation3 Jul 2023 Xinwei Shen, Nicolai Meinshausen

Our experimental results indicate that this model is typically suitable for many real data sets.

regression

Confidence and Uncertainty Assessment for Distributional Random Forests

no code implementations11 Feb 2023 Jeffrey Näf, Corinne Emmenegger, Peter Bühlmann, Nicolai Meinshausen

The Distributional Random Forest (DRF) is a recently introduced Random Forest algorithm to estimate multivariate conditional distributions.

Robust detection and attribution of climate change under interventions

1 code implementation9 Dec 2022 Enikő Székely, Sebastian Sippel, Nicolai Meinshausen, Guillaume Obozinski, Reto Knutti

Fingerprints are key tools in climate change detection and attribution (D&A) that are used to determine whether changes in observations are different from internal climate variability (detection), and whether observed changes can be assigned to specific external drivers (attribution).

Causal Inference Change Detection

Scalable Sensitivity and Uncertainty Analysis for Causal-Effect Estimates of Continuous-Valued Interventions

2 code implementations21 Apr 2022 Andrew Jesson, Alyson Douglas, Peter Manshausen, Maëlys Solal, Nicolai Meinshausen, Philip Stier, Yarin Gal, Uri Shalit

Estimating the effects of continuous-valued interventions from observational data is a critically important task for climate science, healthcare, and economics.

fairadapt: Causal Reasoning for Fair Data Pre-processing

no code implementations19 Oct 2021 Drago Plečko, Nicolas Bennett, Nicolai Meinshausen

Machine learning algorithms are useful for various predictions tasks, but they can also learn how to discriminate, based on gender, race or other sensitive attributes.

Attribute BIG-bench Machine Learning +3

Fair Data Adaptation with Quantile Preservation

no code implementations15 Nov 2019 Drago Plečko, Nicolai Meinshausen

The data adaptation is based on a presumed counterfactual model for the data.

counterfactual Fairness

Causal discovery in heavy-tailed models

2 code implementations14 Aug 2019 Nicola Gnecco, Nicolai Meinshausen, Jonas Peters, Sebastian Engelke

Causal questions are omnipresent in many scientific problems.

Methodology

Anchor regression: heterogeneous data meets causality

2 code implementations18 Jan 2018 Dominik Rothenhäusler, Nicolai Meinshausen, Peter Bühlmann, Jonas Peters

If anchor regression and least squares provide the same answer (anchor stability), we establish that OLS parameters are invariant under certain distributional changes.

Methodology

Grouping-By-ID: Guarding Against Adversarial Domain Shifts

no code implementations ICLR 2018 Christina Heinze-Deml, Nicolai Meinshausen

If two or more samples share the same class and identifier, (Y, ID)=(y, i), then we treat those samples as counterfactuals under different style interventions on the orthogonal or style features.

Data Augmentation Fairness +3

Conditional Variance Penalties and Domain Shift Robustness

1 code implementation31 Oct 2017 Christina Heinze-Deml, Nicolai Meinshausen

Our goal is to minimize a loss that is robust under changes in the distribution of these style features.

General Classification Image Classification

Causal Structure Learning

no code implementations28 Jun 2017 Christina Heinze-Deml, Marloes H. Maathuis, Nicolai Meinshausen

Causal models can be viewed as a special class of graphical models that not only represent the distribution of the observed system but also the distributions under external interventions.

Methodology

Invariant Causal Prediction for Nonlinear Models

1 code implementation26 Jun 2017 Christina Heinze-Deml, Jonas Peters, Nicolai Meinshausen

In this work, we present and evaluate an array of methods for nonlinear and nonparametric versions of ICP for learning the causal parents of given target variables.

Methodology

Scalable Adaptive Stochastic Optimization Using Random Projections

no code implementations NeurIPS 2016 Gabriel Krummenacher, Brian McWilliams, Yannic Kilcher, Joachim M. Buhmann, Nicolai Meinshausen

We show that the regret of Ada-LR is close to the regret of full-matrix AdaGrad which can have an up-to exponentially smaller dependence on the dimension than the diagonal variant.

Dimensionality Reduction Stochastic Optimization

The xyz algorithm for fast interaction search in high-dimensional data

1 code implementation17 Oct 2016 Gian-Andrea Thanei, Nicolai Meinshausen, Rajen D. Shah

When performing regression on a dataset with $p$ variables, it is often of interest to go beyond using main linear effects and include interactions as products between individual variables.

Vocal Bursts Intensity Prediction

Causal inference using invariant prediction: identification and confidence intervals

no code implementations6 Jan 2015 Jonas Peters, Peter Bühlmann, Nicolai Meinshausen

In contrast, predictions from a non-causal model can potentially be very wrong if we actively intervene on variables.

Methodology

LOCO: Distributing Ridge Regression with Random Projections

no code implementations13 Jun 2014 Christina Heinze, Brian McWilliams, Nicolai Meinshausen, Gabriel Krummenacher

We propose LOCO, an algorithm for large-scale ridge regression which distributes the features across workers on a cluster.

regression

On b-bit min-wise hashing for large-scale regression and classification with sparse data

no code implementations6 Aug 2013 Rajen D. Shah, Nicolai Meinshausen

Large-scale regression problems where both the number of variables, $p$, and the number of observations, $n$, may be large and in the order of millions or more, are becoming increasingly more common.

Dimensionality Reduction General Classification +1

Minimum Distance Estimation for Robust High-Dimensional Regression

no code implementations11 Jul 2013 Aurélie C. Lozano, Nicolai Meinshausen

We propose a minimum distance estimation method for robust regression in sparse high-dimensional settings.

regression Vocal Bursts Intensity Prediction

Random Intersection Trees

1 code implementation25 Mar 2013 Rajen Dinesh Shah, Nicolai Meinshausen

We show that informative interactions are retained with high probability, and the computational complexity of our procedure is of order $p^\kappa$ for a value of $\kappa$ that can reach values as low as 1 for very sparse data; in many more general settings, it will still beat the exponent $s$ obtained when using a brute force search constrained to order $s$ interactions.

Stability Selection

2 code implementations17 Sep 2008 Nicolai Meinshausen, Peter Buehlmann

Estimation of structure, such as in variable selection, graphical modelling or cluster analysis is notoriously difficult, especially for high-dimensional data.

Methodology

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