Search Results for author: Stefan Sylvius Wagner

Found 5 papers, 2 papers with code

SQBC: Active Learning using LLM-Generated Synthetic Data for Stance Detection in Online Political Discussions

no code implementations11 Apr 2024 Stefan Sylvius Wagner, Maike Behrendt, Marc Ziegele, Stefan Harmeling

In this work, we present two different ways to leverage LLM-generated synthetic data to train and improve stance detection agents for online political discussions: first, we show that augmenting a small fine-tuning dataset with synthetic data can improve the performance of the stance detection model.

Active Learning Stance Detection

AQuA -- Combining Experts' and Non-Experts' Views To Assess Deliberation Quality in Online Discussions Using LLMs

1 code implementation3 Apr 2024 Maike Behrendt, Stefan Sylvius Wagner, Marc Ziegele, Lena Wilms, Anke Stoll, Dominique Heinbach, Stefan Harmeling

In this work, we introduce AQuA, an additive score that calculates a unified deliberative quality score from multiple indices for each discussion post.

Just Cluster It: An Approach for Exploration in High-Dimensions using Clustering and Pre-Trained Representations

no code implementations5 Feb 2024 Stefan Sylvius Wagner, Stefan Harmeling

In this paper we adopt a representation-centric perspective on exploration in reinforcement learning, viewing exploration fundamentally as a density estimation problem.

Clustering Density Estimation

Cyclophobic Reinforcement Learning

no code implementations30 Aug 2023 Stefan Sylvius Wagner, Peter Arndt, Jan Robine, Stefan Harmeling

In environments with sparse rewards, finding a good inductive bias for exploration is crucial to the agent's success.

Inductive Bias reinforcement-learning

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