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Jason Baldridge, Co-Founder and Chief Scientist at People Pattern and Associate Professor of Computational Linguistics at the University of Texas at Austin, shares recent research of his from UT Austin on text-based geolocation using Wikipedia, Twitter and other sources.

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  • 1. Austin Data 2014 Grounding Text Jason Baldridge @jasonbaldridge Associate Professor Co-founder & Chief Scientist Friday, September 5, 14
  • 2. What does barbecue mean? 2013 Jason M Baldridge Text Analytics Summit, June 2013 2 Friday, September 5, 14
  • 3. What does barbecue mean? Barbecue 2013 Jason M Baldridge Text Analytics Summit, June 2013 2 Friday, September 5, 14
  • 4. What does barbecue mean? Barbecue 2013 Jason M Baldridge Text Analytics Summit, June 2013 2 Friday, September 5, 14
  • 5. What does barbecue mean? Barbecue 2013 Jason M Baldridge Text Analytics Summit, June 2013 2 Friday, September 5, 14
  • 6. What does barbecue mean? Barbecue 2013 Jason M Baldridge Text Analytics Summit, June 2013 2 Friday, September 5, 14
  • 7. What does barbecue mean? Barbecue 2013 Jason M Baldridge Text Analytics Summit, June 2013 2 Friday, September 5, 14
  • 8. What does barbecue mean? Barbecue 2013 Jason M Baldridge Text Analytics Summit, June 2013 2 Friday, September 5, 14
  • 9. What I thought semantics was before 2005 From: John Enrico and Jason Baldridge. 2011. Possessor Raising, Demonstrative Raising, Quantifier Float and Number Float in Haida. International Journal of American Linguistics. 77(2):185-218 2012 Jason M Baldridge Text Analytics Summit, June 2013 3 Friday, September 5, 14
  • 10. Updated perspective a la Ray Mooney (UT Austin CS) http://www.cs.utexas.edu/users/ml/slides/chen-icml08.ppt 2012 Jason M Baldridge Text Analytics Summit, June 2013 4 Friday, September 5, 14
  • 11. http://www.lib.Travel at the Turn of the 20th Century utexas.edu/books/travel/index.html 2012 Jason M Baldridge Text Analytics Summit, June 2013 5 Friday, September 5, 14
  • 12. Motivation: Google Lit Trips [http://www.googlelittrips.com/] http://www.googlelittrips.com/GoogleLit/9-12/Entries/2006/11/1_The_Grapes_of_Wrath_by_John_Steinbeck.html 2013 Jason M Baldridge Text Analytics Summit, June 2013 6 Grapes of Wrath in Google Earth Text Friday, September 5, 14
  • 13. Motivation: Google Lit Trips [http://www.googlelittrips.com/] http://www.googlelittrips.com/GoogleLit/9-12/Entries/2006/11/1_The_Grapes_of_Wrath_by_John_Steinbeck.html 2013 Jason M Baldridge Text Analytics Summit, June 2013 6 Grapes of Wrath in Google Earth Text Friday, September 5, 14
  • 14. Crisis response: Haiti earthquake 2013 Jason M Baldridge Text Analytics Summit, June 2013 7 Friday, September 5, 14
  • 15. Crisis response: Haiti earthquake 2013 Jason M Baldridge Text Analytics Summit, June 2013 7 Friday, September 5, 14
  • 16. Look, Mom, no hands! (Err, um... no metadata.) 2013 Jason M Baldridge Text Analytics Summit, June 2013 8 Friday, September 5, 14
  • 17. Look, Mom, no hands! (Err, um... no metadata.) Topics with a clear, circumscribed 2013 Jason M Baldridge Text Analytics Summit, June 2013 8 geographic focus emerge! Friday, September 5, 14
  • 18. But, of course, metadata is now plentiful. 2013 Jason M Baldridge Text Analytics Summit, June 2013 9 Friday, September 5, 14
  • 19. Geotagged Wikipedia 30 17 N 97 44 W 2013 Jason M Baldridge Text Analytics Summit, June 2013 10 Friday, September 5, 14
  • 20. 01:55:55 RT @USER_dc5e5498: Drop and give me 50.... 05:09:29 I said u got a swisher from redmond!? He said nah kirkland! Lol..ooooooooOkay! 05:57:35 Lmao!:) havin a good ol time after work! Unexpected! #goodtimes 06:00:09 RT @USER_d5d93fec: #letsbereal .. No seriously, #letsbereal>>lol. Don't start. 06:00:37 On my way to get @USER_60939380 yeee! She want some of this strawberry! Sexy! ... 473141 N 1221152 W 2013 Jason M Baldridge Text Analytics Summit, June 2013 11 Geotagged Twitter Friday, September 5, 14
  • 21. 01:55:55 RT @USER_dc5e5498: Drop and give me 50.... 05:09:29 I said u got a swisher from redmond!? He said nah kirkland! Lol..ooooooooOkay! 05:57:35 Lmao!:) havin a good ol time after work! Unexpected! #goodtimes 06:00:09 RT @USER_d5d93fec: #letsbereal .. No seriously, #letsbereal>>lol. Don't start. 06:00:37 On my way to get @USER_60939380 yeee! She want some of this strawberry! Sexy! ... 473141 N 1221152 W 2013 Jason M Baldridge Text Analytics Summit, June 2013 11 Geotagged Twitter Friday, September 5, 14
  • 22. Document geolocation: where is this person? 2013 Jason M Baldridge Text Analytics Summit, June 2013 12 Friday, September 5, 14
  • 23. Language modeling approach Amsterdam, Zaandam, Amstelveen, Diemen, Landsmeer ... Frankfurt, Frechen, Hrth, Brhl, Wesseling, ... Wing & Baldridge 2011: Simple supervised document geolocation with geodesic grids. 2013 Jason M Baldridge Text 13 Analytics Summit, June 2013 Friday, September 5, 14
  • 24. Language modeling approach Amsterdam, Zaandam, Amstelveen, Diemen, Landsmeer ... Frankfurt, Frechen, Hrth, Brhl, Wesseling, ... Wing & Baldridge 2011: Simple supervised document geolocation with geodesic grids. 2013 Jason M Baldridge Text 13 Analytics Summit, June 2013 Friday, September 5, 14
  • 25. Wheres a word on Earth? beach mountain wine barbecue 2013 Jason M Baldridge Text Analytics Summit, June 2013 Friday, September 5, 14
  • 26. Wheres a word on Earth? beach mountain wine barbecue 2013 Jason M Baldridge Text Analytics Summit, June 2013 Friday, September 5, 14
  • 27. Locations of Twitter users are not uniformly distributed! (Small) GeoUT (Twitter) plotted on Google Earth, one pin per user. 2013 Jason M Baldridge Text Analytics Summit, June 2013 15 Density of (all) documents in GeoUT over the USA (390 million tweets) Friday, September 5, 14
  • 28. k-d tree for geotagged Wikipedia, looking at N. America Roller, Speriosu, Rallapalli, Wing & Baldridge 2014: Supervised Text-based Geolocation Using Language Models on an Adaptive Grid. 2013 Jason M Baldridge Text Analytics Summit, June 2013 16 Friday, September 5, 14