Geotagging Social Media Content with a Refined Language Modelling Approach

  • Giorgos Kordopatis-Zilos
  • Symeon Papadopoulos
  • Yiannis Kompatsiaris
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9074)


The problem of content geotagging, i.e. estimating the geographic position of a piece of content (text message, tagged image, etc.) when this is not explicitly available, has attracted increasing interest as the large volumes of user-generated content posted through social media platforms such as Twitter and Instagram form nowadays a key element in the coverage of news stories and events. In particular, in large-scale incidents, where location is an important factor, such as natural disasters and terrorist attacks, a large number of people around the globe post comments and content to social media. Yet, the large majority of content lacks proper geographic information (in the form of latitude and longitude coordinates) and hence cannot be utilized to the full extent (e.g., by viewing citizens reports on a map). To this end, we present a new geotagging approach that can estimate the location of a post based on its text using refined language models that are learned from massive corpora of social media content. Using a large benchmark collection, we demonstrate the improvements in geotagging accuracy as a result of the proposed refinements.


Geotagging Social media Language models Similarity search Spatial entropy Location detection 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Cao, J., Huang, Z., Yang, Y., Shen, H.T.: UQ-DKE’s Participation at MediaEval 2014 Placing Task. In: Proceedings of MediaEval 2014 Placing Task, Barcelona, Spain, October 17-18 (2014)Google Scholar
  2. 2.
    Choi, J., Thomee, B., Friedland, G., Cao, L., Ni, K., Borth, D., Elizalde, B., Gottlieb, L., Carrano, C., Pearce, R., Poland, D.: The Placing Task: A Large-scale Geo-estimation Challenge for Social-media Videos and Images. In: Proceedings of the 3rd ACM GeoMM Workshop (2014)Google Scholar
  3. 3.
    Choi, J., Li, X.: The 2014 ICSI/TU Delft Location Estimation System. In: Proceedings of MediaEval 2014 Placing Task, Barcelona, Spain, October 17-18 (2014)Google Scholar
  4. 4.
    Crandall, D.J., Backstrom, L., Huttenlocher, D., Kleinberg, J.: Mapping the World’s Photos. In: Proceedings of the 18th International Conference on World Wide Web, WWW 2009, pp. 761–770. ACM, New York (2009)Google Scholar
  5. 5.
    Ferrés, D., Rodríguez, H.: TALP-UPC at MediaEval 2014 Placing Task: Combining Geographical Knowledge Bases and Language Models for Large-Scale Textual Georeferencing. In: Proceedings of MediaEval 2014 Placing Task, Barcelona, Spain, October 17-18 (2014)Google Scholar
  6. 6.
    Hauff, C., Houben, G.-J.: Geo-Location Estimation of Flickr Images: Social Web Based Enrichment. In: Baeza-Yates, R., de Vries, A.P., Zaragoza, H., Cambazoglu, B.B., Murdock, V., Lempel, R., Silvestri, F. (eds.) ECIR 2012. LNCS, vol. 7224, pp. 85–96. Springer, Heidelberg (2012)CrossRefGoogle Scholar
  7. 7.
    Kessler, C., Janowicz, K., Bishr, M.: An Agenda for the Next Generation Gazetteer: Geographic Information Contribution and Retrieval. In: Proceedings of the 17th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems, pp. 91–100. ACM (2009)Google Scholar
  8. 8.
    Kelm, P., Schmiedeke, S., Sikora, T.: A Hierarchical, Multi-modal Approach for Placing Videos on the Map using Millions of Flickr Photographs. In: Proceedings of the 2011 ACM Workshop on Social and Behavioural Networked Media Access, SBNMA 2011, pp. 15–20. ACM, New York (2011)CrossRefGoogle Scholar
  9. 9.
    Kordopatis-Zilos, G., Orfanidis, G., Papadopoulos, S., Kompatsiaris, Y.: SocialSensor at MediaEval Placing Task 2014. In: Proceedings of MediaEval 2014 Placing Task, Barcelona, Spain, October 17-18 (2014)Google Scholar
  10. 10.
    Li, L., Penatti, O., Almeida, J., Chiachia, G., Calumby, R., Mendes, P., Pedronette, D., Torres, R.: Multimedia Geocoding: The RECOD 2014 Approach. In: Proceedings of MediaEval 2014 Placing Task, Barcelona, Spain, October 17-18 (2014)Google Scholar
  11. 11.
    Lieberman, M.D., Samet, H., Sankaranayananan, J.: Geotagging: using Proximity, Sibling, and Prominence Clues to Understand Comma Groups. In: Proceedings of the 6th Workshop on Geographic Information Retrieval, pp. 6:1–6:8 (2010)Google Scholar
  12. 12.
    Luo, J., Joshi, D., Yu, J., Gallagher, A.: Geotagging in Multimedia and Computer Vision – a Survey. MTAP 51(1), 187–211 (2011)Google Scholar
  13. 13.
    O’Hare, N., Murdock, V.: Modeling Locations with Social Media. Information Retrieval, 1–33 (2012)Google Scholar
  14. 14.
    Popescu, A.: CEA LIST’s participation at MediaEval 2013 Placing Task. In: Proceedings of MediaEval 2013 Placing Task, Barcelona, Spain, October 18-19 (2013)Google Scholar
  15. 15.
    Popescu, A., Papadopoulos, S., Kompatsiaris, Y.: USEMP at MediaEval Placing Task 2014. In: Proceedings of MediaEval 2014 Placing Task, Barcelona, Spain, October 17-18 (2014)Google Scholar
  16. 16.
    Serdyukov, P., Murdock, V., Van Zwol, R.: Placing Flickr Photos on a Map. In: SIGIR 2009, pp. 484–491. ACM, New York (2009)Google Scholar
  17. 17.
    Smart, P.D., Jones, C.B., Twaroch, F.A.: Multi-source Toponym Data Integration and Mediation for a Meta-Gazetteer Service. In: Fabrikant, S.I., Reichenbacher, T., van Kreveld, M., Schlieder, C. (eds.) GIScience 2010. LNCS, vol. 6292, pp. 234–248. Springer, Heidelberg (2010)CrossRefGoogle Scholar
  18. 18.
    Trevisiol, M., Jégou, H., Delhumeau, J., Gravier, S.: Retrieving Geo-Location of Videos with a Divide and Conquer Hierarchical Multimodal Approach. In: ICMR 2013, Dallas, United States. ACM (April 2013)Google Scholar
  19. 19.
    Van Laere, O., Schockaert, S., Dhoedt, B.: Finding Locations of Flickr Resources using Language Models and Similarity Search. In: ICMR 2011, pp. 48:1–48:8. ACM, New York (2011)Google Scholar
  20. 20.
    Zheng, Y.T., Zha, Z.J., Chua, T.S.: Research and Applications on Georeferenced Multimedia: a Survey. Multimedia Tools and Applications 51, 77–98 (2011)CrossRefGoogle Scholar

Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Giorgos Kordopatis-Zilos
    • 1
  • Symeon Papadopoulos
    • 1
  • Yiannis Kompatsiaris
    • 1
  1. 1.Information Technologies InstituteCERTHThessalonikiGreece

Personalised recommendations