Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Finger on the Pulse: Towards a Real-time City Health Monitor

1,037 views

Published on

  • Be the first to comment

Finger on the Pulse: Towards a Real-time City Health Monitor

  1. 1. FINGER ON THE PULSEMonitoring Health of the CityChris Smith, Daniele Quercia, Licia Capra
  2. 2. offline & online
  3. 3. census deprivation + data
  4. 4. census deprivation + londoners on twitter
  5. 5. census deprivation + sentiment
  6. 6. predicting socioeconomic well-being with twitter r=.350 word count r=.365 MaxEnt
  7. 7. census deprivation + topics
  8. 8. Talk of the City [ICWSM’12] social media environment sports health Royal wedding Spanish/Portuguese celebrity gossips
  9. 9. census deprivation + tube trips
  10. 10. Proposal
  11. 11. Proposal
  12. 12. ProposalDeprivation might be connected to: HP1: “unexpected” mobility HP2: use of bus (compared to tube use) HP3: low social/geographic diversity
  13. 13. Hypothesis 1build a gravity model ~ flow of passengers
  14. 14. What is a gravity model? a b Pi PjTij = k g dij Pj Pi dij
  15. 15. Hypothesis 1gravity works: r= .72!
  16. 16. Hypothesis 1Where the model fails to fit wellunexplained bit: prevailing socioeconomic factors ?
  17. 17. Hypothesis 1Where the model fails to fit wellunexplained bit: prevailing socioeconomic factors ?We look at (gravity)Residuals
  18. 18. Hypothesis 2#tube passengers proportional to population“Bus/Car bias”: residual between #passengers and population
  19. 19. Hypothesis 3Social/Geographic diversity: socio-economic advantage“Social/Geo” diversity
  20. 20. Hypothesis 1+2+3 Gravity Residuals *** Bus Bias ** Socio/Geo Diversity n.s.s. R^2= 9% IMD R^2= 34% Living Environment
  21. 21. Hypothesis 1+2+3 (top+bottom only) Gravity Residuals *** Bus Bias ** Socio/Geo Diversity n.s.s. R^2= 27% IMD R^2= 54% Living Environment
  22. 22. Predicting…
  23. 23. Predicting…
  24. 24. Predicting…
  25. 25. So what?Strong Passenger flow–urban deprivation(timely & effective & longitudinal)
  26. 26. Situation  (Its already 75% in the USA)
  27. 27. Situation By 2025 another 1.2 billion living in urban areas
  28. 28. Situation Cities in developing countries: 5M new inhabitants each month
  29. 29. Problem Inequality! Timely allocation of scarce resources
  30. 30. census deprivation + “mental maps”
  31. 31. draw a map
  32. 32. launched few months ago & > 2K players
  33. 33. Visibility & Social Deprivation
  34. 34. FINGER ON THE PULSEMonitoring Health in the CityChris Smith, Daniele Quercia, Licia Capra

×