About the Authors

Martin Becker

Affiliations Department for Artificial Intelligence and Applied Computer Science, University of Würzburg, Würzburg, Germany, L3S Research Center, Leibniz Universität, Hannover, Germany

Saverio Caminiti

Affiliation Physics Department, Sapienza University, Rome, Italy

Donato Fiorella

Affiliation CSP Innovazione nelle ICT, Turin, Italy

Louise Francis

Affiliation Extreme Citizen Science Research Group, Department of Civil, Environmental and Geomatic Engineering, University College London, London, United Kingdom

Pietro Gravino

Affiliation Physics Department, Sapienza University, Rome, Italy

Mordechai (Muki) Haklay

Affiliation Extreme Citizen Science Research Group, Department of Civil, Environmental and Geomatic Engineering, University College London, London, United Kingdom

Andreas Hotho

Affiliations Department for Artificial Intelligence and Applied Computer Science, University of Würzburg, Würzburg, Germany, L3S Research Center, Leibniz Universität, Hannover, Germany

Vittorio Loreto

Affiliations Complex Networks and Systems Lagrange Laboratory, Institute for Scientific Interchange Foundation, Turin, Italy, Physics Department, Sapienza University, Rome, Italy

Juergen Mueller

Affiliations Department of Electrical Engineering/Computer Science, University of Kassel, Kassel, Germany, L3S Research Center, Leibniz Universität, Hannover, Germany

Ferdinando Ricchiuti

Affiliation CSP Innovazione nelle ICT, Turin, Italy

Vito D. P. Servedio

Affiliation Physics Department, Sapienza University, Rome, Italy

Alina Sîrbu

alina.sirbu@isi.it

Affiliation Complex Networks and Systems Lagrange Laboratory, Institute for Scientific Interchange Foundation, Turin, Italy

Francesca Tria

Affiliation Complex Networks and Systems Lagrange Laboratory, Institute for Scientific Interchange Foundation, Turin, Italy

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MB SC DF LF PG MH AH VL JM FR VDPS AS FT. Analyzed the data: MB PG AH VL VDPS AS FT. Wrote the paper: MB SC DF LF PG MH AH VL JM FR VDPS AS FT. App implementation and maintenance: MB DF AH JM FR. Web platform implementation and maintenance: MB SC PG AH VL JM VDPS FT. Participant recruiting activities: SC LF PG MH VL AS VDPS FT. Data analysis: MB PG AH VL VDPS AS FT.