geomob london september 2011
DESCRIPTION
TRANSCRIPT
<urban mining>
<who am i>
daniele quercia
computational social science
</who am i>
<urban mining>
social contacts + social events + privacy
1. recommend social contacts
How? Using mobility data
keep bluetooth on & record who’s around
upload records on registered profile
get people you may know
2. recommend social events
mobility data + …
… + listings of social events
On input of area of residence: 1. popular events 2. geographically close3. popular in area of residence
On input of area of residence: 1. popular events 2. geographically close3. popular in area of residence4. TF-IDF 5. K-N Locations6. K-N Events
Lesson 1: geographically close isn’t the best ;-)
Lesson 2: popular in area rocks ;-)
Lesson 3: geographical patterns matter ;-)
geographical patterns matter
geographically close isn’t the best
‘popular in area’ rocks
[ICDM’10]
pricing billboards
share it all[by Facebook CEO]
share it all[by Facebook CEO]
share nothing[by Wisdom of the Granmother’s Foundation]
share it all[by Facebook CEO]
share nothing[by Wisdom of the Granmother’s Foundation]
share fake data[by Us]
counting phones
counting phones + privacy
Idea:
true location + + “99” fake locations
true location + + “99” fake locations
true location + + “99” fake locations
true location + + “99” fake locations
#phones?
(random) fake locations
Tube passengers in London & car drivers in Zurich: accurately estimate #people
Tube passengers in London & car drivers in Zurich: accurately estimate #people (18% error with 99% fake locations)
(random) fake locations
(random) fake locations
Evade paying taxes?Don’t answer! Flip a coin instead
Yes!
[truth]
true location + + “99” fake locations
true location + + “99” fake locations
true location + + “99” fake locations
promoting location privacy… one lie at a time
Online & Offline Worlds@danielequercia
social media language personality
social media
social media language personality
social media
we can build monitoring tools
r=.350 word count r=.365 MaxEnt
predicting socioeconomic well-being with twitter
predicting personality with twitter
predicting personality with twitter
YES, we can!
predicting personality with twitter
YES, we can!
And
only
using
follow
ers, f
ollowi
ng, li
sted!
informal networks in offices
social interactions & space
“Who talks to whom”
Network
tools for change
Now: Auralist (music recommender)Next: ‘Nudge’ people for serendipity
tools for change
@danielequercia