Dr. Gregor Wiedemann

Senior Researcher Computational Social Sciences

Since September 2020, Dr. Gregor Wiedemann has been working as Senior Researcher for Computational Social Science at the Leibniz Institute for Media Research │ Hans-Bredow-Institut (HBI). Together with Sascha Hölig he heads the Media Research Methods Lab (MRML). His current work focuses on the development of methods and applications of natural language processing and text mining for empirical social and media research.

Gregor Wiedemann studied political science and computer science in Leipzig and Miami, USA. In 2016 he received his doctorate from the Department of Computer Science (NLP group, Prof. Gerhard Heyer) at the University of Leipzig for his thesis on automation of discourse and content analysis using text mining and machine learning methods. Afterwards he worked as a postdoc in the Department of Computer Science (Language Technology group, Prof. Chris Biemann) at Universität Hamburg.

Among other things, the resulting works are concerned with unsupervised information extraction to support investigative research in unknown document collections (see newsleak.io) and with the detection of hate and counter-speech in social media.

Before starting at the MRML, Gregor Wiedemann headed the DFG project “A Framework for Argument Mining and Evaluation (FAME)” which deals with the automatic recognition and evaluation of recurring argument structures in empirical texts.

Contact information

Dr. Gregor Wiedemann

Senior Researcher Computational Social Sciences

Leibniz Institute for Media Research | Hans-Bredow-Institut (HBI)
Rothenbaumchaussee 36
20148 Hamburg
Germany

Last update: 04.07.2024

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Works by Dr. Gregor Wiedemann

Illustration: ein oranger Roboter sitzt inmitten schwarzer Figuren, die Menschen darstellen
Projekt Project of the DFG Research Group ComAI

Communicative AI and Deliberative Quality

What impact do social bots that use Large Language Models (LLMs) have on the quality of political discourse? The project investigates communicative AI in the social domain of political discourse using discourse monitoring and discourse intervention and thus with a largely experimental approach. The case studies are debates in German on the topic of climate change on X, Mastodon and Bluesky.

Cover des Berichts "Cross-Plattform-Forschung"
Publikation Report Available for Download

Cross-Platform Research: Methods of Data Collection and Analysis

Philipp Kessling, Mattes Ruckdeschel, Dr. Felix Victor Münch and Dr. Gregor Wiedemann developed methods and strategies for analyzing cross-platform social media data as part of the NOTORIOUS project, which focused on the role of celebrities in disinformation campaigns.

Äpfel in einer Sortiermaschine
Projekt New Methods in Automated Content Analysis

Few-Shot Learning in Communication Science

The cooperation project transfers computer science methods to empirical communication science. Semi-automated content analyses can thus also examine vast amounts of data.

Dunkler Serverraum
Projekt For a Secure Data Exchange

Data Portal Right-Wing Extremism

A research data infrastructure is to be further developed for the "Data Portal for Research on Racism and Right-Wing Extremism".

People walk across a zebra crossing to the left and right
Projekt Research Network

Research Institute Social Cohesion

At the Research Institute Social Cohesion (RISC) the HBI researches the role of the media in social cohesion.

Bildschirm mit Code
Projekt Monitoring and Data Infrastructure

Social Media Observatory

The Social Media Observatory is a database for the systematic observation of the media-based public sphere.

Illustration: Person blickt ins Smartphone
Projekt Funded by the Federal Ministry of Education and Research

The Role of Celebrities in Disinformation Campaigns

This project examines the communication of "celebrities" in social media to gain a better understanding of their role in disinformation campaigns.

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