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Quantifying International Travel Flows Using Flickr.

Daniele Barchiesi1, Helen Susannah Moat2, Christian Alis1

  • 1Department of Mathematics, University College London, London, United Kingdom.

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Online photo sharing platforms like Flickr offer a novel way to track international travel. Flickr data on user locations and movement significantly correlates with official UK visitor statistics, demonstrating its potential for human mobility analysis.

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Area of Science:

  • Computational social science
  • Human mobility studies
  • Digital data analysis

Background:

  • Online social media provides unprecedented opportunities for analyzing human behavior at scale.
  • Digital data offers a potentially faster and more cost-effective alternative to traditional surveys for behavioral measurements.

Purpose of the Study:

  • To quantify international travel flows using geotagged photographs from Flickr.
  • To assess the validity of using online photo data as a proxy for human mobility.

Main Methods:

  • Extraction of user locations from geotagged Flickr photographs.
  • Inference of user movement trajectories over time.
  • Statistical correlation analysis between Flickr-based estimates and official statistics.

Main Results:

  • Flickr-based estimates of UK visitors showed significant correlation with official UK Office for National Statistics data.
  • This correlation was observed for 28 different countries.
  • The study highlights the utility of online photo data for mobility research.

Conclusions:

  • Geotagged photographs on platforms like Flickr can serve as a valuable data source for understanding international travel patterns.
  • Digital indicators derived from online data hold potential for monitoring key aspects of human behavior, such as mobility.
  • This approach offers a scalable and efficient method for complementing traditional data collection in social science research.