finger on the pulse: towards a real-time city health monitor
TRANSCRIPT
FINGER ON THE PULSEMonitoring Health of the City
Chris Smith, Daniele Quercia, Licia Capra
offline & online
census deprivation + data
census deprivation + londoners on twitter
census deprivation + sentiment
r=.350 word count r=.365 MaxEnt
predicting socioeconomic well-being with twitter
census deprivation + topics
social media environment sports health Royal wedding
Spanish/Portuguesecelebrity gossips
Talk of the City [ICWSM’12]
census deprivation + tube trips
Proposal
Proposal
Proposal
Deprivation might be connected to:
HP1: “unexpected” mobility HP2: use of bus (compared to tube use) HP3: low social/geographic diversity
Hypothesis 1
build a gravity model ~ flow of passengers
What is a gravity model?
Hypothesis 1
gravity works: r= .72!
Hypothesis 1
Where the model fails to fit well unexplained bit: prevailing socioeconomic factors ?
Hypothesis 1
Where the model fails to fit well unexplained bit: prevailing socioeconomic factors ? We look at (gravity)Residuals
Hypothesis 2
#tube passengers proportional to population “Bus/Car bias”: residual between #passengers and population
Hypothesis 3
Social/Geographic diversity: socio-economic advantage “Social/Geo” diversity
Hypothesis 1+2+3
Gravity Residuals ***Bus Bias **Socio/Geo Diversity n.s.s.
R^2= 9% IMDR^2= 34% Living Environment
Hypothesis 1+2+3 (top+bottom only)
Gravity Residuals ***Bus Bias **Socio/Geo Diversity n.s.s.
R^2= 27% IMDR^2= 54% Living Environment
Predicting…
Predicting…
Predicting…
So what?
Strong Passenger flow–urban deprivation (timely & effective & longitudinal)
Situation
(Its already 75% in the USA)
Situation
By 2025 another 1.2 billion living in urban areas
Situation
Cities in developing countries: 5M new inhabitants each month
Problem
?
Inequality! Timely allocation of scarce resources
census deprivation + “mental maps”
draw a map
launched few months ago & > 2K players
Visibility & Social Deprivation
FINGER ON THE PULSEMonitoring Health in the City
Chris Smith, Daniele Quercia, Licia Capra