Using Social Media to Estimate the Audience Sizes of Public Events for Crisis Management and Emergency Care

  • Patrick FelkaEmail author
  • Artur Sterz
  • Oliver Hinz
  • Bernd Freisleben
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10983)


Public events such as soccer games, concerts, or street festivals attract large crowds of visitors. In an emergency situation, estimations about current events and their numbers of visitors are important to be able to react early and effectively by performing adequate countermeasures. Previous research has proposed approaches to detect events like accidents and catastrophes by relying on user-generated content and reporting event-related information. To be proactive in case of an emergency, it is important to know what is happening in direct proximity, even if it is not yet affected by the catastrophe. Therefore, information about ongoing events and numbers of visitors in the surrounding environment is indispensable. We develop a system design that allows collecting and merging event-related information from social media to provide estimations of the audience sizes. We illustrate the potential of our approach by estimating the number of visitors of soccer games, fairs, street festivals, music festivals, and concerts, and by comparing it to the real numbers of visitors. Our results indicate that matching event-related user-generated content leads to improvements of the estimations. Finally, we demonstrate the usefulness of the system in a recent crisis scenario.


Emergency and crisis management Crisis coordination Event estimation Social media analysis 



This work has been funded by the DFG as part of the CRC 1053 MAKI.


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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  • Patrick Felka
    • 1
    Email author
  • Artur Sterz
    • 2
  • Oliver Hinz
    • 1
  • Bernd Freisleben
    • 2
  1. 1.Goethe University FrankfurtFrankfurt am MainGermany
  2. 2.Technische Universität DarmstadtDarmstadtGermany

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