My research investigates economic phenomena in the digital economy. I do so using novel big data sources and applying modern statistical methods.

On this website, you will find a summary of my current research projects that use search engine and Amazon product data to assess fair competition on digital platforms, as well as smartphone location data and large amounts of unstructured newspaper articles to estimate the effect of political conflict on consumption.

Working Papers

Measuring Fair Competition on Digital Platforms

Authors: Lukas Jürgensmeier and Bernd Skiera

Status: Revise & Resubmit at the Journal of Marketing


Digital platforms use recommendations to facilitate the exchange between platform actors, such as buyers and sellers. Platform actors expect and legislators increasingly demand that competition, including recommendations, is fair, especially for a market-dominating platform on which self-preferencing could occur. However, testing for fairness on platforms is challenging because offers from competing platform actors usually differ in their characteristics, and many distinct fairness definitions exist. This article considers these challenges and develops a five-step approach to measure fair competition through recommendations on digital platforms. The article illustrates this approach by conducting two empirical studies that examine Amazon’s search engine recommendations on the Amazon marketplace for more than a million daily observations from three countries. It finds no consistent evidence for unfair competition in these studies. The article also discusses applying the five-step approach in other settings to ensure compliance with new regulations governing fair competition on digital platforms, such as the Digital Markets Act.

Keywords: Digital Platforms, Amazon, Competition, Antitrust, Search Engines

Conference Presentations

Conference Date Location Presenting Author
17th Symposium on Statistical Challenges in Electronic Commerce Research (SCECR 2021) June 2021

Madrid, Spain


Lukas Jürgensmeier
Interactive Marketing Research Conference (IMRC 2021) October 2021

Gabelli School of Business, Fordham University, New York City, United States


Lukas Jürgensmeier
13th Paris Conference on Digital Economics 2022 April 2022 Télécom Paris, Paliseau, France Lukas Jürgensmeier
EMAC Doctoral Colloquium 2022 May 2022 Corvinus University, Budapest, Hungary Lukas Jürgensmeier
EMAC Annual Conference 2022 May 2022 Corvinus University, Budapest, Bernd Skiera
Munich Summer Institute 2022 June 2022 Bavarian Academy of Sciences and Humanities, Munich, Germany Lukas Jürgensmeier
ISMS Marketing Science Conference 2022 June 2022

University of Chicago Booth School of Business, United States


Lukas Jürgensmeier
20th ZEW Conference on the Economics of Information and Communication Technologies July 2022 ZEW — Leibniz Centre for European Economic Research, Mannheim, Germany Lukas Jürgensmeier
SALTY 2022 — Quantitative Marketing Conference September 2022 WHU — Otto Beisheim School of Management, Düsseldorf, Germany Lukas Jürgensmeier
WISE 2022 — Workshop on Information Systems in Economics December 2022 Copenhagen Business School, Copenhagen, Denmark Lukas Jürgensmeier
ISMS Marketing Science Conference 2023 (special session for winners of the 2022 ISMS Doctoral Dissertation Proposal Competition) June 2023 Miami, United States Lukas Jürgensmeier


This project is funded by the German Research Foundation (Deutsche Forschungsgemeinschaft—DFG) through grant number SK 66/8-1 within the project Visibility in Digital Markets: Risks and Economic Consequences.

Do Political Conflicts Influence Daily Consumption Choices?

Authors: Celina Proffen and Lukas Jürgensmeier

Status: Working paper (available upon request)


Political conflict is a fixture of modern democracies. Such conflict shapes societal and political outcomes. But does political conflict with a foreign county also influence domestic consumers’ daily consumption choices? This study investigates whether consumers boycott goods associated with the opposing country in a setting where the conflict does not directly influence the characteristics of these focal goods. More concretely, we use the US-China trade conflict to analyze whether consumers reduce their visits to Chinese restaurants in the US when political relations deteriorate. We measure the degree of political conflict through the negativity in media reports and rely on smartphone location data of more than 11 million devices to proxy daily visits to over 193,926 restaurants in the US. We find that a deterioration in US-China relations induces a statistically and economically significant decline in visits to Chinese restaurants relative to non-Chinese restaurants in the US. At the same time, visits to other foreign cuisines also decrease substantially, while visits to traditional American restaurants increase. We interpret these results as evidence that reporting on international conflicts triggers ethnocentric consumer behavior.

Conference Presentations

Conference Date Location Presenting Author
EMAC Doctoral Colloquium 2022 May 2022 Corvinus University, Budapest, Hungary Celina Proffen
EMAC Annual Conference 2022 May 2022 Corvinus University, Budapest, Hungary Lukas Jürgensmeier
VfS Annual Conference 2022 September 2022 University of Basel, Switzerland Celina Proffen
Economics of Media Workshop: Industrial Organization meets Political Economy September 2022 Smith School of Business, Queen’s University, Kingston, ON, Canada Lukas Jürgensmeier
efl — the Data Science Institute, Jour Fixe January 2023 Frankfurt, Germany Celina Proffen


This project is funded by the efl – the Data Science Institute.