Enable tweet-geolocation and don’t drive ERTs crazy!   Improving situational awareness using Twitter   Juan Sixto, Oscar P...
Outline                        ● Motivations                        ● Why Twitter ?                        ● Extracting Re...
Motivations                         ● SABESS Project                         ● Social Networks provide high               ...
Why Twitter ?                        Advantages                        ● Very popular communication tool                  ...
Extracting relevant information                                         ● What?                                           ...
Location Problems                                   ● Ungeotagged                                      tweets & users     ...
Noise Reduction                                  ● Slang Cleaner                                  ● Stop Words            ...
Noise Reduction                                                   ● Slang Cleaner                                         ...
Noise ReductionOh My God, being woken up to a car on #fire right outside my window, only in #Springfield!. http://bitly.co...
Noise ReductionGod, woken car  fire window,  Springfield!.                                                 ● Slang Cleaner...
Noise Reduction Results   http://www.flickr.com/photos/rarebeasts/4468517649/
Disambiguationhttp://www.flickr.com/photos/dougtone/5180424902/
Proposed Solutions                                          ● Geolocalization APIs                                        ...
Proposed Solutions Demo   http://www.flickr.com/photos/leehaywood/5047795870/
Results                                              ● NER Tool                                              Comparison   ...
Conclusions and Future Work                                       ● Other Social Networks                                 ...
References F. Abel, C. Hauff, G. J. Houben, R. Stronkman, and K. Tao. Semantics+ filtering+ search=twitcident. exploring i...
Enable tweet-geolocation and don’t drive ERTs crazy!   Improving situational awareness using Twitter                      ...
Enable tweet-geolocation and don’t drive ERTs crazy!   Improving situational awareness using TwitterAll rights of images a...
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Enable tweet-geolocation and don’t drive ERTs crazy!

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Enable tweet-geolocation and don’t drive ERTs crazy!
Improving situational awareness using Twitter

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Enable tweet-geolocation and don’t drive ERTs crazy!

  1. 1. Enable tweet-geolocation and don’t drive ERTs crazy! Improving situational awareness using Twitter Juan Sixto, Oscar Peña, Bernhard Klein and Diego López-de-Ipiña DeustoTech−Deusto Institute of Technology, University of Deusto SMERST 2013. University of Warwick, Coventry UK
  2. 2. Outline ● Motivations ● Why Twitter ? ● Extracting Relevant Information ● Location Problems ● Noise Reduction ● Disambiguation ● Proposed Solutions ● Results ● Conclusions and Future Workhttp://www.flickr.com/photos/usnavy/8154906115/
  3. 3. Motivations ● SABESS Project ● Social Networks provide high availability compared to traditional communication services. ● People usually tend to post more often than alerting ERTs. ● Easy to automate the incoming data (programmatic analysis)http://www.flickr.com/photos/wiertz/8553028974
  4. 4. Why Twitter ? Advantages ● Very popular communication tool (>175M/day tweets and 200M users) ● De-facto tool for broadcasting news ● Real-time information Drawbacks ● Short posts (140 characters max) ● Much noise in the Twitterversehttp://www.flickr.com/photos/usnavy/8154906115/
  5. 5. Extracting relevant information ● What? ● Incidents filtered by keywords + context ● Where? ● User profiles location ● Geo-tagged tweets ● NER System (Named Entity Recognition) http://www.flickr.com/photos/rosauraochoa/3283888598/
  6. 6. Location Problems ● Ungeotagged tweets & users ● Noise ● Ambiguity http://www.flickr.com/photos/scottod/5653885470/
  7. 7. Noise Reduction ● Slang Cleaner ● Stop Words ● Hashtags ● URLs ● Mentionshttp://www.flickr.com/photos/rarebeasts/4468517649/
  8. 8. Noise Reduction ● Slang Cleaner ● Stop Words ● Hashtags ● URLsOh My God, being woken up to a car on #fire right outside my window, only in #Springfield!. ttp://bitly.com/16KWmdM ● Mentions http://www.flickr.com/photos/rarebeasts/4468517649/
  9. 9. Noise ReductionOh My God, being woken up to a car on #fire right outside my window, only in #Springfield!. http://bitly.com/16KWmdM ● Slang CleanerGod, woken car  #fire window, #Springfield!. http://bitly.com/16KWmdM ● Stop Words ● HashtagsGod, woken car  fire window, Springfield!.  ● URLshttp://bitly.com/16KWmdM ● MentionsGod, woken car  fire window,  Springfield!. http://www.flickr.com/photos/rarebeasts/4468517649/
  10. 10. Noise ReductionGod, woken car  fire window,  Springfield!. ● Slang Cleaner ● Stop Words NER Analyser ● Hashtags ● URLs ● Mentions Springfield [LOCATION]. http://www.flickr.com/photos/rarebeasts/4468517649/
  11. 11. Noise Reduction Results http://www.flickr.com/photos/rarebeasts/4468517649/
  12. 12. Disambiguationhttp://www.flickr.com/photos/dougtone/5180424902/
  13. 13. Proposed Solutions ● Geolocalization APIs ● Nominatim (OSM) ● Geonames ● Google Reverse Coder ● Yahoo Geoplanethttp://www.flickr.com/photos/leehaywood/5047795870/
  14. 14. Proposed Solutions Demo http://www.flickr.com/photos/leehaywood/5047795870/
  15. 15. Results ● NER Tool Comparison ● Geo-location API Comparisonhttp://www.flickr.com/photos/rosasay/4675053765/
  16. 16. Conclusions and Future Work ● Other Social Networks ● Improve Conversation Graphs ● Increase Accuracy http://www.flickr.com/photos/usnavy/8612336419
  17. 17. References F. Abel, C. Hauff, G. J. Houben, R. Stronkman, and K. Tao. Semantics+ filtering+ search=twitcident. exploring information in social web streams. In Proceedings of the 23rd ACM conferenceon Hypertext and social media, pages 285–294, 2012.S. Paradesi. Geotagging tweets using their content. In Proceedings of the Twenty-Fourth Interna-tional Florida Artificial Intelligence Research Society Conference, 2011.Jie Yin, A. Lampert, M. Cameron, B. Robinson, and R. Power. Using social media to enhanceemergency situation awareness. Intelligent Systems, IEEE, 27(6):52–59, December 2012.A. Ritter, S. Clark, and O. Etzioni. Named entity recognition in tweets: an experimental study.In Proceedings of the Conference on Empirical Methods in Natural Language Processing, pages1524–1534, 2011. http://www.flickr.com/photos/usnavy/8612336419
  18. 18. Enable tweet-geolocation and don’t drive ERTs crazy! Improving situational awareness using Twitter Juan Sixto Cesteros jsixto@deusto.es @JuanSixtoC Juan Sixto, Oscar Peña, Bernhard Klein and Diego López-de-Ipiña DeustoTech−Deusto Institute of Technology, University of Deusto SMERST 2013. University of Warwick, Coventry UK
  19. 19. Enable tweet-geolocation and don’t drive ERTs crazy! Improving situational awareness using TwitterAll rights of images are reserved by the original owners*, the rest of the content is licensed under a Creative Commons by-sa 3.0 license. *See references in each slide
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