Search Results for author: Christian Heumann

Found 17 papers, 8 papers with code

Pre-trained language models evaluating themselves - A comparative study

1 code implementation insights (ACL) 2022 Philipp Koch, Matthias Aßenmacher, Christian Heumann

Evaluating generated text received new attention with the introduction of model-based metrics in recent years.

Negation

Variational Approach for Efficient KL Divergence Estimation in Dirichlet Mixture Models

no code implementations18 Mar 2024 Samyajoy Pal, Christian Heumann

This study tackles the efficient estimation of Kullback-Leibler (KL) Divergence in Dirichlet Mixture Models (DMM), crucial for clustering compositional data.

Clustering Computational Efficiency

Position Paper: Bridging the Gap Between Machine Learning and Sensitivity Analysis

no code implementations20 Dec 2023 Christian A. Scholbeck, Julia Moosbauer, Giuseppe Casalicchio, Hoshin Gupta, Bernd Bischl, Christian Heumann

We argue that interpretations of machine learning (ML) models or the model-building process can bee seen as a form of sensitivity analysis (SA), a general methodology used to explain complex systems in many fields such as environmental modeling, engineering, or economics.

Position

fmeffects: An R Package for Forward Marginal Effects

no code implementations3 Oct 2023 Holger Löwe, Christian A. Scholbeck, Christian Heumann, Bernd Bischl, Giuseppe Casalicchio

Forward marginal effects (FMEs) have recently been introduced as a versatile and effective model-agnostic interpretation method.

How Prevalent is Gender Bias in ChatGPT? -- Exploring German and English ChatGPT Responses

1 code implementation21 Sep 2023 Stefanie Urchs, Veronika Thurner, Matthias Aßenmacher, Christian Heumann, Stephanie Thiemichen

With the introduction of ChatGPT, OpenAI made large language models (LLM) accessible to users with limited IT expertise.

Classifying multilingual party manifestos: Domain transfer across country, time, and genre

1 code implementation31 Jul 2023 Matthias Aßenmacher, Nadja Sauter, Christian Heumann

We explore the potential of domain transfer across geographical locations, languages, time, and genre in a large-scale database of political manifestos.

domain classification

How Different Is Stereotypical Bias Across Languages?

1 code implementation14 Jul 2023 Ibrahim Tolga Öztürk, Rostislav Nedelchev, Christian Heumann, Esteban Garces Arias, Marius Roger, Bernd Bischl, Matthias Aßenmacher

Recent studies have demonstrated how to assess the stereotypical bias in pre-trained English language models.

Using interpretable boosting algorithms for modeling environmental and agricultural data

no code implementations4 May 2023 Fabian Obster, Christian Heumann, Heidi Bohle, Paul Pechan

We describe how interpretable boosting algorithms based on ridge-regularized generalized linear models can be used to analyze high-dimensional environmental data.

Multimodal Deep Learning

1 code implementation12 Jan 2023 Cem Akkus, Luyang Chu, Vladana Djakovic, Steffen Jauch-Walser, Philipp Koch, Giacomo Loss, Christopher Marquardt, Marco Moldovan, Nadja Sauter, Maximilian Schneider, Rickmer Schulte, Karol Urbanczyk, Jann Goschenhofer, Christian Heumann, Rasmus Hvingelby, Daniel Schalk, Matthias Aßenmacher

This book is the result of a seminar in which we reviewed multimodal approaches and attempted to create a solid overview of the field, starting with the current state-of-the-art approaches in the two subfields of Deep Learning individually.

Multimodal Deep Learning Representation Learning

Sparse-group boosting -- Unbiased group and variable selection

1 code implementation13 Jun 2022 Fabian Obster, Christian Heumann

By using component-wise and group-wise gradient boosting at the same time with adjusted degrees of freedom, a model with similar properties as the sparse group lasso can be fitted through boosting.

Variable Selection

Forecasting foreign exchange rates with regression networks tuned by Bayesian optimization

no code implementations26 Apr 2022 Linwei Li, Paul-Amaury Matt, Christian Heumann

The article is concerned with the problem of multi-step financial time series forecasting of Foreign Exchange (FX) rates.

Bayesian Optimization regression +2

Marginal Effects for Non-Linear Prediction Functions

no code implementations21 Jan 2022 Christian A. Scholbeck, Giuseppe Casalicchio, Christoph Molnar, Bernd Bischl, Christian Heumann

Hence, marginal effects are typically used as approximations for feature effects, either in the shape of derivatives of the prediction function or forward differences in prediction due to a change in a feature value.

On the comparability of Pre-trained Language Models

no code implementations3 Jan 2020 Matthias Aßenmacher, Christian Heumann

It is not always obvious where these improvements originate from, as it is not possible to completely disentangle the contributions of the three driving forces.

Cloud Computing Language Modelling +2

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