Roman Keller

529 total citations
8 papers, 273 citations indexed

About

Roman Keller is a scholar working on Applied Psychology, General Health Professions and Artificial Intelligence. According to data from OpenAlex, Roman Keller has authored 8 papers receiving a total of 273 indexed citations (citations by other indexed papers that have themselves been cited), including 5 papers in Applied Psychology, 4 papers in General Health Professions and 2 papers in Artificial Intelligence. Recurrent topics in Roman Keller's work include Digital Mental Health Interventions (5 papers), Mobile Health and mHealth Applications (4 papers) and AI in Service Interactions (2 papers). Roman Keller is often cited by papers focused on Digital Mental Health Interventions (5 papers), Mobile Health and mHealth Applications (4 papers) and AI in Service Interactions (2 papers). Roman Keller collaborates with scholars based in Switzerland, Singapore and United Kingdom. Roman Keller's co-authors include Florian von Wangenheim, Theresa Schachner, Tobias Kowatsch, Elgar Fleisch, Filipe Barata, Jacqueline L. Mair, Lorainne Tudor Car, Falk Müller‐Riemenschneider, Gisbert Wilhelm Teepe and Antoni Moore and has published in prestigious journals such as Scientific Reports, Journal of Medical Internet Research and Children.

In The Last Decade

Roman Keller

6 papers receiving 264 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Roman Keller Switzerland 5 121 101 91 35 33 8 273
Theresa Schachner Switzerland 4 150 1.2× 122 1.2× 97 1.1× 36 1.0× 15 0.5× 8 280
Dhakshenya Ardhithy Dhinagaran Singapore 5 209 1.7× 144 1.4× 153 1.7× 53 1.5× 22 0.7× 6 374
Anirudh Thommandram Canada 8 105 0.9× 147 1.5× 98 1.1× 72 2.1× 30 0.9× 14 403
Abhishek Aggarwal United States 5 95 0.8× 75 0.7× 74 0.8× 92 2.6× 23 0.7× 15 300
Joongseek Lee South Korea 8 70 0.6× 68 0.7× 116 1.3× 30 0.9× 35 1.1× 28 381
Ahmed Fadhil Italy 7 118 1.0× 138 1.4× 89 1.0× 20 0.6× 13 0.4× 10 298
Silke ter Stal Netherlands 6 140 1.2× 95 0.9× 80 0.9× 9 0.3× 20 0.6× 10 284
Nashva Ali Qatar 6 197 1.6× 108 1.1× 53 0.6× 30 0.9× 14 0.4× 10 312
Elliot G. Mitchell United States 9 75 0.6× 58 0.6× 94 1.0× 7 0.2× 31 0.9× 20 263
Florian Künzler Switzerland 6 137 1.1× 49 0.5× 103 1.1× 5 0.1× 15 0.5× 10 225

Countries citing papers authored by Roman Keller

Since Specialization
Citations

This map shows the geographic impact of Roman Keller's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Roman Keller with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Roman Keller more than expected).

Fields of papers citing papers by Roman Keller

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Roman Keller. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Roman Keller. The network helps show where Roman Keller may publish in the future.

Co-authorship network of co-authors of Roman Keller

This figure shows the co-authorship network connecting the top 25 collaborators of Roman Keller. A scholar is included among the top collaborators of Roman Keller based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Roman Keller. Roman Keller is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

8 of 8 papers shown
1.
Mair, Jacqueline L., Óscar Castro, Roman Keller, et al.. (2025). Feasibility of the LvL UP digital lifestyle coaching intervention designed to prevent non-communicable diseases and common mental disorders. Scientific Reports. 16(1). 1243–1243.
2.
Castro, Óscar, Jacqueline L. Mair, Alicia Salamanca-Sanabria, et al.. (2023). Development of “LvL UP 1.0”: a smartphone-based, conversational agent-delivered holistic lifestyle intervention for the prevention of non-communicable diseases and common mental disorders. Frontiers in Digital Health. 5. 1039171–1039171. 18 indexed citations
3.
Keller, Roman, et al.. (2023). Social media and internet search data to inform drug utilization: A systematic scoping review. Frontiers in Digital Health. 5. 1074961–1074961. 2 indexed citations
4.
Keller, Roman, Gisbert Wilhelm Teepe, Lorainne Tudor Car, et al.. (2021). Digital Behavior Change Interventions for the Prevention and Management of Type 2 Diabetes: Systematic Market Analysis. Journal of Medical Internet Research. 24(1). e33348–e33348. 31 indexed citations
5.
Schachner, Theresa, Roman Keller, Elgar Fleisch, et al.. (2021). Voice-Based Conversational Agents for the Prevention and Management of Chronic and Mental Health Conditions: Systematic Literature Review. Journal of Medical Internet Research. 23(3). e25933–e25933. 77 indexed citations
6.
Keller, Roman, Jiali Yao, Gisbert Wilhelm Teepe, et al.. (2021). Are Conversational Agents Used at Scale by Companies Offering Digital Health Services for the Management and Prevention of Diabetes?. Repository for Publications and Research Data (ETH Zurich). 811–816.
7.
Schachner, Theresa, Roman Keller, & Florian von Wangenheim. (2020). Artificial Intelligence-Based Conversational Agents for Chronic Conditions: Systematic Literature Review. Journal of Medical Internet Research. 22(9). e20701–e20701. 132 indexed citations
8.
Mandic, Sandra, Roman Keller, Enrique Garcíá Bengoechea, Antoni Moore, & Kirsten J. Coppell. (2018). School Bag Weight as a Barrier to Active Transport to School among New Zealand Adolescents. Children. 5(10). 129–129. 13 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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2026