Stephan Stahlschmidt

Dr. Stephan Stahlschmidt

Research Area Research System and Science Dynamics
Acting Head of Department
  • +49 30 2064177-18

Academic research fields

Projects

List of projects

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Between Economy and Democracy: Reorganizing Research Evaluation through Metadata in the Digital Era (REREV)
Initiation of a network of national bibliometric infrastructures (INNBI)
Innovation via Open Access? A study on the effects of the policy-supported open access transformation in national innovation processes (INNOA)
Comparative Analysis and Curation of German Metadata in Open Bibliometric Data (OPENBIB)
Competence Network for Bibliometrics
Publications

List of publications

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Structural and institutional determinants of Open Access publishing: A macro-perspective.

Cruz Romero, R., & Stahlschmidt, S. (2025).
Structural and institutional determinants of Open Access publishing: A macro-perspective. In S. Sargsyan, W. Glänzel, & G. Abramo (Hrsg.), Proceedings of the 20th International Conference on Scientometrics & Informetrics (ISSI 2025) (S. 2351-2360). Yerevan: International Society for Scientometrics and Informetrics (ISSI).

Are citation context information stronger related to peer ratings than citation counts? A descriptive analysis.

Donner, P., Stahlschmidt, S., Haunschild, R., & Bornmann, L. (2025).
Are citation context information stronger related to peer ratings than citation counts? A descriptive analysis. In S. Sargsyan, W. Glänzel, & G. Abramo (Hrsg.), Proceedings of the 20th International Conference on Scientometrics & Informetrics (ISSI 2025) (S. 325-332). Yerevan: International Society for Scientometrics and Informetrics.
Abstract

In this study, we investigated whether citation context information is able to increase the validity of citation impact analyses to measure research quality compared to simple citation counts. We analyzed the statistical relationships of information extracted from structured citation context data in the Web of Science (Clarivate) such as the placement of citations within specific sections of an article with post-publication peer review quality ratings from Faculty Opinions (H1 connect), used as an external validity criterion for research quality. The study is based on publications in medicine and life sciences. [...]

Ko-Publikationen für das Monitoring internationaler Hochschulkooperationen: Aussagekraft, Datenquellen und Datennutzung.

Stahlschmidt, S. (2025).
Ko-Publikationen für das Monitoring internationaler Hochschulkooperationen: Aussagekraft, Datenquellen und Datennutzung. Sitzung der KMK Bund-Länder AG „Indikatoren“.

Implicit reporting standards in bibliometric research: What can reviewers' comments tell us about reporting completeness?

Stephen, D., Schniedermann, A., Lovakov, A., Schmidt, M., Ottaviani, M., ... & Stahlschmidt, S. (2025).
Implicit reporting standards in bibliometric research: What can reviewers' comments tell us about reporting completeness? In S. Sargsyan, W. Glänzel, & G. Abramo (Hrsg.), Proceedings of the 20th International Conference on Scientometrics & Informetrics (ISSI 2025) (S. 2193-2200). Yerevan: International Society for Scientometrics and Informetrics.

Assessing bibliodiversity through reference lists: A text analysis approach.

Cruz Romero, R., Stephen, D., & Stahlschmidt, S. (2024).
Assessing bibliodiversity through reference lists: A text analysis approach. In STI2024 (Hrsg.), Proceedings of the 28th International Conference on Science, Technology and Innovation Indicators (STI2024) (S. 1-14). Berlin: STI2024. https://doi.org/10.5281/zenodo.14045592
Abstract

The presence or absence of publishers in large bibliographic databases highlights tangible and symbolic differences between small and large publishers, underlining their diverging incentive structures. To assess these differences, this contribution explores reference data from small (open access) publishers and their journals in the Web of Science and Scopus. The analysis focuses on references that are not indexed in these databases and examines them from a text-as-data approach. The study frames two dimensions of relevance - visibility and impact - as proxies for assessing the scholarly bibliodiversity represented by small (open access) publishers.

Kontrollierte Exzellenz: Wissenschaftsfreiheit in China aus Sicht von Forschenden unterschiedlicher Disziplinen.

Kaiser, A., Lovakov, A., Kinzelbach, K., & Stahlschmidt, S. (2024).
Kontrollierte Exzellenz: Wissenschaftsfreiheit in China aus Sicht von Forschenden unterschiedlicher Disziplinen. Forschung & Lehre, 2024(8), 590-591.

Endbericht: Studie zur deutschen Beteiligung am EU-Rahmenprogramm und aktueller Trends der europäischen Forschungs- und Innovationsförderung.

Ploder, M., Schütz, M., Streicher, J., Schuch, K., Bolibok, O., Stahlschmidt, S., & Lovakov, A. (2024).
Endbericht: Studie zur deutschen Beteiligung am EU-Rahmenprogramm und aktueller Trends der europäischen Forschungs- und Innovationsförderung. Graz, Wien, Berlin: Joanneum Research, ZSI, DZHW.

On the performativity of SDG classifications in large bibliometric databases.

Ottaviani, M., & Stahlschmidt, S. (2024).
On the performativity of SDG classifications in large bibliometric databases. ArXiv (online first). https://doi.org/10.48550/arXiv.2405.03007
Abstract

This work proposes using the feature of large language models (LLMs) to learn about the "data bias" injected by diverse SDG classifications into bibliometric data by exploring five SDGs. We build a LLM that is fine-tuned in parallel by the diverse SDG classifications inscribed into the databases' SDG classifications. Our results show high sensitivity in model architecture, classified publications, fine-tuning process and natural language generation. The wide arbitrariness at different levels raises concerns about using LLM in research practice.

Contrasting cross-correlation: Meta-analyses of the associations between citations and 13 altmetrics, incorporating moderating variables.

Stephen, D., & Stahlschmidt, S. (2024).
Contrasting cross-correlation: Meta-analyses of the associations between citations and 13 altmetrics, incorporating moderating variables. Scientometrics (online first).

Publikationen aus DFG-geförderten Projekten.

Meier, A., Mittermaier, B., Möller, T., Ottaviani, M., Scheidt, B., & Stahlschmidt, S. (2023).
Publikationen aus DFG-geförderten Projekten. Praxis und Nutzbarkeit von Funding Acknowledgements. Bonn: DFG.

Mind the gap: Nowcasting the citation impact of research institutions.

Stahlschmidt, S., & Stephen, D. (2023).
Mind the gap: Nowcasting the citation impact of research institutions. In ISSI (Hrsg.), Proceedings of ISSI 2023 – the 19th International Conference of the International Society for Scientometrics and Informetrics (S. 441-447). Bloomington, United States: International Society for Scientometrics and Informetrics.

Detection of (non-)existing participation in contested academic discourses.

Aman, V., & Stahlschmidt, S. (2023).
Detection of (non-)existing participation in contested academic discourses. In ISSI (Hrsg.), Proceedings of ISSI 2023 – the 19th International Conference of the International Society for Scientometrics and Informetrics (S. 15-21). Bloomington, United States: International Society for Scientometrics and Informetrics.

Confounding cross-correlation: A meta-analysis of the association between citations and altmetrics.

Stephen, D., & Stahlschmidt, S. (2023).
Confounding cross-correlation: A meta-analysis of the association between citations and altmetrics. In ISSI (Hrsg.), Proceedings of ISSI 2023 – the 19th International Conference of the International Society for Scientometrics and Informetrics (S. 449-454). Bloomington, United States: International Society for Scientometrics and Informetrics.

Landscape study of small journal publishers for the Knowledge Exchange Task & Finish Group for " Small Publishers and the Transition to Open Access " .

Stephen, D., & Stahlschmidt, S. (2022).
Landscape study of small journal publishers for the Knowledge Exchange Task & Finish Group for "Small Publishers and the Transition to Open Access". Berlin: DZHW.

From indexation policies through citation networks to normalized citation impacts: Web of Science, Scopus, and Dimensions as varying resonance chambers.

Stahlschmidt, S., & Stephen, D. (2022).
From indexation policies through citation networks to normalized citation impacts: Web of Science, Scopus, and Dimensions as varying resonance chambers. Scientometrics, 2022(127), 2413-2431. https://doi.org/10.1007/s11192-022-04309-6
Presentations

List of presentations & conferences

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Structural and institutional determinants of Open Access publishing: A macro-perspective.

Cruz Romero, R., & Stahlschmidt, S. (2025, Juni).
Structural and institutional determinants of Open Access publishing: A macro-perspective. Vortrag auf der Konferenz 20th International Society for Scientometrics and Informetrics (ISSI) Conference, International Society for Scientometrics and Informetrics (ISSI), Yerevan, Armenia.

Are citation context information stronger related to peer ratings than citation counts? A descriptive analysis.

Donner, P., Stahlschmidt, S., Haunschild, R., & Bornmann, L. (2025, Juni).
Are citation context information stronger related to peer ratings than citation counts? A descriptive analysis. Vortrag auf der Konferenz 20th International Conference on Scientometrics & Informetrics (ISSI 2025), Yerevan, Armenien.

Guidance List for repOrting Bibliometric AnaLyses (GLOBAL): A two-round modified Delphi Study.

Stephen, D. (2025, Juni).
Guidance List for repOrting Bibliometric AnaLyses (GLOBAL): A two-round modified Delphi Study. Vortrag im Rahmen der Ad-hoc-Gruppe GLOBAL auf der Konferenz 20th International Society for Scientometrics and Informetrics (ISSI) Conference, Yerevan, Armenia.

Implicit reporting standards in bibliometric research: What can reviewers’ comments tell us about reporting completeness?

Stephen, D., Schniedermann, A., Lovakov, A., Schmidt, M., Ottaviani, M., ... & Stahlschmidt, S. (2025, Juni).
Implicit reporting standards in bibliometric research: What can reviewers’ comments tell us about reporting completeness? Vortrag auf der Konferenz 20th International Society for Scientometrics and Informetrics (ISSI) Conference, Yerevan, Armenia.

The impact of AI on SDG classifications in bibliometric databases: A conceptual inquiry into policy and research outcomes.

Ottaviani, M. (2025, Februar).
The impact of AI on SDG classifications in bibliometric databases: A conceptual inquiry into policy and research outcomes. Vortrag auf der Konferenz The use of generative AI for science of science and higher education studies, Università della Svizzera Italiana in Lugano, Switzerland.

Political-Economic Characteristics of the Open Access Transformation: Exploring the Dimensions of Stagnant Scholarly Outputs.

Cruz Romero, R. (2024, November).
Political-Economic Characteristics of the Open Access Transformation: Exploring the Dimensions of Stagnant Scholarly Outputs. Poster auf dem Workshop Nordic Workshop on Bibliometrics and Research Policy 2024 (NWB), University of iceland, Reykjavik, Iceland.

Assessing Bibliodiversity through Reference Lists: A Text Analysis Approach.

Cruz Romero, R., Stephen, D., & Stahlschmidt, S. (2024, September).
Assessing Bibliodiversity through Reference Lists: A Text Analysis Approach. Vortrag auf der Konferenz 28th International Conference on Science, Technology and Innovation Indicators 2024 (STI), Berlin.

Reflexive Bibliometrics on Open Research Information through Participatory Foresight.

Gauch, S., Waltman, L., Stahlschmidt, S., Costas, R., Visser, M., ... & Neylon, C. (2024, September).
Session Reflexive Bibliometrics on Open Research Information through Participatory Foresight auf der Konferenz 28th International Conference on Science, Technology and Innovation Indicators (STI2024), Fraunhofer ISI, Humboldt-Universität zu Berlin, DZHW, Berlin.

Improving Transparency and Quality of Bibliometric Methods and Reporting.

Haustein, S., Ng, J. Y., Stephen, D., Schniedermann, A., Stahlschmidt, S., ... & Glänzel, W. (2024, September).
Session Improving Transparency and Quality of Bibliometric Methods and Reporting auf der Konferenz 28th International Conference on Science, Technology and Innovation Indicators 2024 (STI), Berlin, Germany.

Into the great wild open? Unintended side effects of Open Research Information.

Stahlschmidt, S. (2024, September).
Into the great wild open? Unintended side effects of Open Research Information. Impulsvortrag auf der Konferenz 28th International Conference on Science, Technology and Innovation Indicators 2024 (STI), Fraunhofer ISI, Humboldt-Universität zu Berlin, DZHW, Berlin.

european summer school for scientometrics (esss2024).

Glänzel, W., Debackere, K., Hinze, S., Gauch, S., Stahlschmidt, S., ... & Gorraiz, J. (2024).
european summer school for scientometrics (esss2024)., Universität Wien, Vienna, Austria.

Accuracy and Beyond: Data Quality of Bibliometric Databases.

Stahlschmidt, S. (2024, September).
Accuracy and Beyond: Data Quality of Bibliometric Databases. Vortrag auf der Summer School european summer school for scientometrics (esss2024), Universität Wien, Vienna, Austria.

Studie zur deutschen Beteiligung am EU-Rahmenprogramm für Forschung und Innovation.

Ploder, M., Schütze, M., Streicher, J., Schuch, K., Stahlschmidt, S., & Lovakov, A. (2024, Februar).
Studie zur deutschen Beteiligung am EU-Rahmenprogramm für Forschung und Innovation. Vortrag auf dem Workshop Forschung für ein nachhaltiges Europa, Projektträger Jülich, Bonn.

Studie zur deutschen Beteiligung am EU-Rahmenprogramm für Forschung und Innovation: Erste Ergebnisse zur gegenwärtigen Wahrnehmung.

Ploder, M., Linshalm, E., Schütze, M., Streicher, J., Schuch, K., ... & Lovakov, A. (2023, Dezember).
Studie zur deutschen Beteiligung am EU-Rahmenprogramm für Forschung und Innovation: Erste Ergebnisse zur gegenwärtigen Wahrnehmung. Vortrag im Rahmen des Erfahrungsaustausches zu Horizont Europa , BMBF, Köln.

Mind the gap: Nowcasting the citation impact of research institutions.

Stahlschmidt, S., & Stephen, D. (2023, November).
Mind the gap: Nowcasting the citation impact of research institutions. Vortrag auf dem Kolloquium Departamento de Información y Comunicación, Universidad de Granada, Granada, Spanien.