Wachs, Johannes
senior research fellow, Agglomeration and social networks Research Group
johannes.wachs@krtk.elte.hu
Research topics
Digital economy
Networks
Innovation
Networks
Innovation
Publications
Koltai Júlia Anna, Lőrincz László, Wachs Johannes, Takács Károly (2025): Do diversity and context collapse kill an online social network?. DOI: 10.1007/s41109-025-00719-6
Betti Lorenzo, Gallo Luca, Wachs Johannes, Battiston Federico (2025): The dynamics of leadership and success in software development teams. DOI: 10.1038/s41467-025-59031-7
Schuster H, Polleres A, Anjomshoaa A, Wachs Johannes (2025): Heat, health, and habitats. DOI: 10.1038/s41598-025-05676-9
Juhász Sándor, Wachs Johannes, Kaminski Jermain, Hidalgo Cesar A. (2024): The Software Complexity of Nations
del Rio-Chanona R. Maria, Laurentsyeva Nadzeya, Wachs Johannes (2024): Large language models reduce public knowledge sharing on online Q&A platforms. DOI: 10.1093/pnasnexus/pgae400
Mészáros Gábor, Wachs Johannes (2024): The Dynamics of Innovation in Open Source Software Ecosystems
Schueller William, Wachs Johannes (2024): Modeling interconnected social and technical risks in open source software ecosystems. DOI: 10.1177/26339137241231912
Schuster Hannah, Polleres Axel, Wachs Johannes (2024): Stress-testing road networks and access to medical care. DOI: 10.1016/j.tra.2024.104017
Schuster Hannah, Polleres Axel, Anjomshoaa Amin, Wachs Johannes (2024): Heat, Health, and Habitats
Lengyel Balázs, Tóth Gergő, Wachs Johannes (2023): Kapcsolathálózatok és jövedelemegyenlőtlenség a magyar városokban
Wachs Johannes (2023): A háború egyik legsúlyosabb következménye Oroszországra nézve: de mekkora is a baj?
Wachs Johannes (2023): Digital traces of brain drain. DOI: 10.1140/epjds/s13688-023-00389-3
Schuster H, Polleres A, Wachs Johannes (2023): Stress-testing road networks and access to medical care
Polleres Axel, Pernisch Romana, Bonifati Angela, Dell'Aglio Daniele, Dobriy Daniil, Dumbrava Stefania, Etcheverry Lorena, Ferranti Nicolas, Hose Katia, Jiménez-Ruiz Ernesto, Lissandrini Matteo, Scherp Ansgar, Tommasini Riccardo, Wachs Johannes (2023): How does knowledge evolve in open knowledge graphs?. DOI: 10.4230/TGDK.1.1.11
Heiler Georg, Pham Tuan, Korbel Jan, Wachs Johannes, Thurner Stefan (2023): A large-scale empirical investigation of specialization in criminal career. DOI: 10.1038/s41598-023-43552-6
Hagar Nick, Wachs Johannes, Horvát Emőke-Ágnes (2023): Writer movements between news outlets reflect political polarization in media. DOI: 10.1177/14614448211027173
Dambanemuya Henry Kudzanai, Wachs Johannes, Horvat Emőke-Ágnes (2023): Understanding (Ir)rational Herding Online. DOI: 10.1145/3582269.3615598
Anjomshoaa Amin, Schuster Hannah, Wachs Johannes, Polleres Axel (2023): From Data to Insights
Fazekas Mihály, Ferrali Romain, Wachs Johannes (2023): Agency independence, campaign contributions, and favouritism in US federal government contracting. DOI: 10.1093/jopart/muac026
Gessler T, Tóth Gergő, Wachs Johannes (2022): No country for asylum seekers? How short-term exposure to refugees influences attitudes and voting behavior in Hungary. DOI: 10.1007/s11109-021-09682-1
Papoutsoglou Maria, Rigas Emmanouil S., Kapitsaki Georgia M., Angelis Lefteris, Wachs Johannes (2022): Online labour market analytics for the green economy: The case of electric vehicles. DOI: 10.1016/j.techfore.2022.121517
Schueller William, Wachs Johannes, Servedio Vito D. P., Thurner Stefan, Loreto Vittorio (2022): Evolving collaboration, dependencies, and use in the Rust Open Source Software ecosystem. DOI: 10.1038/s41597-022-01819-z
Sikdar Sandipan, Sachdeva Rachneet, Wachs Johannes, Lemmerich Florian, Strohmaier Markus (2022): The Effects of Gender Signals and Performance in Online Product Reviews. DOI: 10.3389/fdata.2021.771404
Wachs Johannes, Nitecki Mariusz, Schueller William, Polleres Axel (2022): The Geography of Open Source Software. DOI: 10.1016/j.techfore.2022.121478
Kertész János, Wachs Johannes (2021): Complexity science approach to economic crime. DOI: 10.1038/s42254-020-0238-9
Wachs Johannes, Fazekas Mihaly, Kertesz Janos (2021): Corruption risk in contracting markets: a network science perspective. DOI: 10.1007/s41060-019-00204-1
Wachs Johannes, Nitecki Mariusz, Schueller William, Polleres Axel (2021): The Geography of Open Source Software: Evidence from GitHub
Wachs Johannes, Vedres Balázs (2021): Does crowdfunding really foster innovation?. DOI: 10.1016/j.techfore.2021.120747
Papoutsoglou Maria, Wachs Johannes, Kapitsaki Georgia M. (2021): Mining DEV for social and technical insights about software development. DOI: 10.1109/MSR52588.2021.00053
Moldon Lukas, Strohmaier Markus, Wachs Johannes (2021): How Gamification Affects Software Developers: Cautionary Evidence from a Natural Experiment on GitHub. DOI: 10.1109/ICSE43902.2021.00058
Czibik Ágnes, Fazekas Mihály, Sanchez Alfredo Hernandez, Wachs Johannes (2021): Networked Corruption Risks in European Defense Procurement. DOI: 10.1007/978-3-030-81484-7_5
Tóth Gergő, Wachs Johannes, Di Clemente R, Jakobi Ákos, Ságvári Bence, Kertész János, Lengyel Balázs (2021): Inequality is rising where social network segregation interacts with urban topology - NATURE COMMUNICATIONS 2041-1723 2041-1723. DOI: 10.1038/s41467-021-21465-0
Fazekas Mihaly, Wachs Johannes (2020): Corruption and the Network Structure of Public Contracting Markets across Government Change. DOI: 10.17645/pag.v8i2.2707
Wachs Johannes, Yasseri Taha, Lengyel Balázs, Kertész János (2019): Social capital predicts corruption risk in towns - ROYAL SOCIETY OPEN SCIENCE 2054-5703 2054-5703. DOI: 10.1098/rsos.182103
May Anna, Wachs Johannes, Hannák Anikó (2019): Gender differences in participation and reward on Stack Overflow. DOI: 10.1007/s10664-019-09685-x
Wachs Johannes, Kertesz Janos (2019): A network approach to cartel detection in public auction markets. DOI: 10.1038/s41598-019-47198-1
Horvát Emőke-Ágnes, Wachs Johannes, Wang Rong, Hannák Anikó (2018): The Role of Novelty in Securing Investors for Equity Crowdfunding Campaigns
Wachs Johannes, Daróczy Bálint Zoltán, Hannák A, Páll K, Riedl C (2018): And now for something completely different: Visual novelty in an online network of designers. DOI: 10.1145/3201064.3201088
Wachs Johannes, Hannak A, Voros A, Daróczy Bálint Zoltán (2017): Why do men get more attention? Exploring factors behind success in an online design community
2023 - Digital traces of brain drain: developers during the Russian invasion of Ukraine
2023 - Agency Independence, Campaign Contributions, and Favoritism in US Federal Government Contracting
2022 - No country for asylum seekers? How short-term exposure to refugees influences attitudes and voting behavior in Hungary
2022 - Evolving Collaboration, Dependencies, and Use in the Rust Open Source Software Ecosystem
2022 - The Geography of Open Source Software: Evidence from GitHub
2021 - Does Crowdfunding Really Foster Innovation? Evidence from the Board Game Industry
Betti Lorenzo, Gallo Luca, Wachs Johannes, Battiston Federico (2025): The dynamics of leadership and success in software development teams. DOI: 10.1038/s41467-025-59031-7
Schuster H, Polleres A, Anjomshoaa A, Wachs Johannes (2025): Heat, health, and habitats. DOI: 10.1038/s41598-025-05676-9
Juhász Sándor, Wachs Johannes, Kaminski Jermain, Hidalgo Cesar A. (2024): The Software Complexity of Nations
del Rio-Chanona R. Maria, Laurentsyeva Nadzeya, Wachs Johannes (2024): Large language models reduce public knowledge sharing on online Q&A platforms. DOI: 10.1093/pnasnexus/pgae400
Mészáros Gábor, Wachs Johannes (2024): The Dynamics of Innovation in Open Source Software Ecosystems
Schueller William, Wachs Johannes (2024): Modeling interconnected social and technical risks in open source software ecosystems. DOI: 10.1177/26339137241231912
Schuster Hannah, Polleres Axel, Wachs Johannes (2024): Stress-testing road networks and access to medical care. DOI: 10.1016/j.tra.2024.104017
Schuster Hannah, Polleres Axel, Anjomshoaa Amin, Wachs Johannes (2024): Heat, Health, and Habitats
Lengyel Balázs, Tóth Gergő, Wachs Johannes (2023): Kapcsolathálózatok és jövedelemegyenlőtlenség a magyar városokban
Wachs Johannes (2023): A háború egyik legsúlyosabb következménye Oroszországra nézve: de mekkora is a baj?
Wachs Johannes (2023): Digital traces of brain drain. DOI: 10.1140/epjds/s13688-023-00389-3
Schuster H, Polleres A, Wachs Johannes (2023): Stress-testing road networks and access to medical care
Polleres Axel, Pernisch Romana, Bonifati Angela, Dell'Aglio Daniele, Dobriy Daniil, Dumbrava Stefania, Etcheverry Lorena, Ferranti Nicolas, Hose Katia, Jiménez-Ruiz Ernesto, Lissandrini Matteo, Scherp Ansgar, Tommasini Riccardo, Wachs Johannes (2023): How does knowledge evolve in open knowledge graphs?. DOI: 10.4230/TGDK.1.1.11
Heiler Georg, Pham Tuan, Korbel Jan, Wachs Johannes, Thurner Stefan (2023): A large-scale empirical investigation of specialization in criminal career. DOI: 10.1038/s41598-023-43552-6
Hagar Nick, Wachs Johannes, Horvát Emőke-Ágnes (2023): Writer movements between news outlets reflect political polarization in media. DOI: 10.1177/14614448211027173
Dambanemuya Henry Kudzanai, Wachs Johannes, Horvat Emőke-Ágnes (2023): Understanding (Ir)rational Herding Online. DOI: 10.1145/3582269.3615598
Anjomshoaa Amin, Schuster Hannah, Wachs Johannes, Polleres Axel (2023): From Data to Insights
Fazekas Mihály, Ferrali Romain, Wachs Johannes (2023): Agency independence, campaign contributions, and favouritism in US federal government contracting. DOI: 10.1093/jopart/muac026
Gessler T, Tóth Gergő, Wachs Johannes (2022): No country for asylum seekers? How short-term exposure to refugees influences attitudes and voting behavior in Hungary. DOI: 10.1007/s11109-021-09682-1
Papoutsoglou Maria, Rigas Emmanouil S., Kapitsaki Georgia M., Angelis Lefteris, Wachs Johannes (2022): Online labour market analytics for the green economy: The case of electric vehicles. DOI: 10.1016/j.techfore.2022.121517
Schueller William, Wachs Johannes, Servedio Vito D. P., Thurner Stefan, Loreto Vittorio (2022): Evolving collaboration, dependencies, and use in the Rust Open Source Software ecosystem. DOI: 10.1038/s41597-022-01819-z
Sikdar Sandipan, Sachdeva Rachneet, Wachs Johannes, Lemmerich Florian, Strohmaier Markus (2022): The Effects of Gender Signals and Performance in Online Product Reviews. DOI: 10.3389/fdata.2021.771404
Wachs Johannes, Nitecki Mariusz, Schueller William, Polleres Axel (2022): The Geography of Open Source Software. DOI: 10.1016/j.techfore.2022.121478
Kertész János, Wachs Johannes (2021): Complexity science approach to economic crime. DOI: 10.1038/s42254-020-0238-9
Wachs Johannes, Fazekas Mihaly, Kertesz Janos (2021): Corruption risk in contracting markets: a network science perspective. DOI: 10.1007/s41060-019-00204-1
Wachs Johannes, Nitecki Mariusz, Schueller William, Polleres Axel (2021): The Geography of Open Source Software: Evidence from GitHub
Wachs Johannes, Vedres Balázs (2021): Does crowdfunding really foster innovation?. DOI: 10.1016/j.techfore.2021.120747
Papoutsoglou Maria, Wachs Johannes, Kapitsaki Georgia M. (2021): Mining DEV for social and technical insights about software development. DOI: 10.1109/MSR52588.2021.00053
Moldon Lukas, Strohmaier Markus, Wachs Johannes (2021): How Gamification Affects Software Developers: Cautionary Evidence from a Natural Experiment on GitHub. DOI: 10.1109/ICSE43902.2021.00058
Czibik Ágnes, Fazekas Mihály, Sanchez Alfredo Hernandez, Wachs Johannes (2021): Networked Corruption Risks in European Defense Procurement. DOI: 10.1007/978-3-030-81484-7_5
Tóth Gergő, Wachs Johannes, Di Clemente R, Jakobi Ákos, Ságvári Bence, Kertész János, Lengyel Balázs (2021): Inequality is rising where social network segregation interacts with urban topology - NATURE COMMUNICATIONS 2041-1723 2041-1723. DOI: 10.1038/s41467-021-21465-0
Fazekas Mihaly, Wachs Johannes (2020): Corruption and the Network Structure of Public Contracting Markets across Government Change. DOI: 10.17645/pag.v8i2.2707
Wachs Johannes, Yasseri Taha, Lengyel Balázs, Kertész János (2019): Social capital predicts corruption risk in towns - ROYAL SOCIETY OPEN SCIENCE 2054-5703 2054-5703. DOI: 10.1098/rsos.182103
May Anna, Wachs Johannes, Hannák Anikó (2019): Gender differences in participation and reward on Stack Overflow. DOI: 10.1007/s10664-019-09685-x
Wachs Johannes, Kertesz Janos (2019): A network approach to cartel detection in public auction markets. DOI: 10.1038/s41598-019-47198-1
Horvát Emőke-Ágnes, Wachs Johannes, Wang Rong, Hannák Anikó (2018): The Role of Novelty in Securing Investors for Equity Crowdfunding Campaigns
Wachs Johannes, Daróczy Bálint Zoltán, Hannák A, Páll K, Riedl C (2018): And now for something completely different: Visual novelty in an online network of designers. DOI: 10.1145/3201064.3201088
Wachs Johannes, Hannak A, Voros A, Daróczy Bálint Zoltán (2017): Why do men get more attention? Exploring factors behind success in an online design community
2023 - Digital traces of brain drain: developers during the Russian invasion of Ukraine
2023 - Agency Independence, Campaign Contributions, and Favoritism in US Federal Government Contracting
2022 - No country for asylum seekers? How short-term exposure to refugees influences attitudes and voting behavior in Hungary
2022 - Evolving Collaboration, Dependencies, and Use in the Rust Open Source Software Ecosystem
2022 - The Geography of Open Source Software: Evidence from GitHub
2021 - Does Crowdfunding Really Foster Innovation? Evidence from the Board Game Industry
Research stays
2018 Oxford Internet Institute
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0
Studies
2015-2019 CEU, Network Science, PhD
2010-2012 CEU, Applied Mathematics, MS
2005-2009 Tulane University, Economics, Mathematics, BS
2010-2012 CEU, Applied Mathematics, MS
2005-2009 Tulane University, Economics, Mathematics, BS
Employment history
2023 Budapest Corvinus UniversityDocens
2020-2023 Vienna University of Economics and BusinessAssistant Professor
2020-2023 Complexity Science Hub ViennaResearcher
2019-2020 RWTH Aachen UniversityPostdoctoral Fellow
2020-2023 Vienna University of Economics and BusinessAssistant Professor
2020-2023 Complexity Science Hub ViennaResearcher
2019-2020 RWTH Aachen UniversityPostdoctoral Fellow
Languages
English
German
Hungarian
German
Hungarian
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