The Green City Hackathon consisted of six teams who addressed bike use in the city of Barcelona using data published in the Open Data BCN Portal

The winning presentation was by Angela Ulrich, Camila González, Ramón Ferri García, and Ian Thomas (Team 6) on "Barcelona. Bike Use and Accident Overview." Congratulations to the winning team and all participants! 

All hackathon presentations can be found here at http://opendata-ajuntament.barcelona.cat/en/noticia-green-city-hackathon or in our github repository https://github.com/bigsurv18/bigsurv18 (including replication materials if available).


The Green City Hackathon Background Information

The Green City Hackathon. We kick off the conference with an incredible Hackathon. The Hackathon will be held in the afternoon of October 24 (13:00 - 17:30; Room: 40.035 S. Graus, Roger de Llúria building), and the morning of October 25 (09:00 - 12:00; Room: 40.035 S. Graus), bringing together computer scientists, data scientists, social scientists and survey and big data experts from all over the world. Teams join forces to work on an open data policy challenge. In collaboration with the Municipal Data Office at the Barcelona City Council the teams will explore Open Data BCN - the open data website - to help investigate and provide further insights to make Barcelona a more sustainable place to work and live and encourage a greener, greater Barcelona.

The Green City Challenge. The city of Barcelona would like to reduce private car use within the city, in particular by promoting use of bicycles. We would like to know more about how bikes are used by residents: Who uses them? Which neighborhood observes the most bike commutes? Where is infrastructure missing? Are there enough bicycle stands? Are there any streets where an exclusive use of bikes might be beneficial?

The Goal. This challenge aims to provide the city of Barcelona with descriptive analyses, bike use maps, predictive analyses, digital tools, etc. The data challenge will be utilizing data coming from the Open Data BCN portal a key unit in the Barcelona Digital City Plan, which contains data on population and demography of specific neighborhoods, information about bicycle use, or traffic and accidents in the city. In addition, data on complaints are available. All these data are accessible in various formats and can be linked to survey data.

The Data Wrangling Teams. We will have 5 teams, each with 5 participants, digging into these questions. The teams will be grouped by the organizers with a focus on being interdisciplinary.

Support from Experts. During the Green City Hackathon teams will be supported by researchers from the fields of data science and survey methodology. In addition, the Commissioner’s Office for Technology and Digital Innovation and the Municipal Data Office at the Barcelona City Council will assist the teams with their data expertise. Once the hacking ends, every team presents their results to a panel of expert judges and audience members. Plus, Hackathon winners get the chance to present their results in a flash-talk following the BigSurv18 opening keynotes.

Our mentors are: Daniela Hochfellner (Senior Research Scientist and Research Assistant Professor, NYU Center for Urban Science + Progress; Adjunct Research Assistant Professor at the Institute for Social Research, Survey Research Center at the University of Michigan); James Cajka (Geographic Information Systems Analyst, RTI Internation-al); Micha Fischer (PhD Candidate, Survey Methodology Program, Survey Research Center, Institute for Social Research, University of Michigan); and Open Data BCN staff of the Municipal Data Office at the Barcelona City Council.

Our judges are: Amelia Burke-Garcia (Westat); Màrius Boada i Pla (Director of Municipal Data Office, Ajuntament de Barcelona); Curtiss Cobb (Facebook), Daniel Cuende (technical manager for GEOMEX, the Out of Home Audience Measurement in Spain, winner of the Microsoft & ESOMAR hackathon, and ESOMAR representative); and Silvia Esteban (Bicycle's Strategy, Mobility-Strategy Department - Ecologia Urbana at the Barcelona City Council).

Application. Simply indicate your commitment to participate on the BigSurv18 registration form. If you are not registering for BigSurv18, but are interested in participating in the Hackathon, apply now through August 30 by completing the short application using the following link. Applicants will be informed of the status of their application by September 15.

Important Dates.

  • Application Deadline: August 30, 2018
  • Notification of Acceptance: September 15, 2018
  • Hackathon Date: October 24, 1 pm - October 25, 12pm, 2018


Location. Research and Expertise Centre for Survey Methodology (RECSM) at the Universitat Pompeu Fabra (UPF), Roger de Llúria building (Ciutadella campus - Room 40.035 (Sala de Graus Albert Calsamiglia)), Ramon Trias Fargas, 25-27, 08005 Barcelona


  • Excitement and enthusiasm.
  • Computers are not provided by the Hackathon, thus each participant should bring their own laptop. Ideally the laptop has Python or R/R-Studio (or any other statistical software) installed. You will need to connect to the internet to download data.
  • Wifi is available at the Hackathon.
  • Snacks in case your team decides to go a little longer on site.

The Hackathon takes place in collaboration with the city of Barcelona which has organized other exciting data challenges such as the Barcelona Dades Obertes Challenge.

This event is supported by ESOMAR, RTI International, and Westat.   In collaboration with: