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