2. Where this talk fits in
Social
Mobile location
Mapping/Community/Participatory
Mapping
3. Some Takes from Twitter &
Facebook
Social data over time
The concept of „Timeline‟
The „Social Graph‟
How does the „social graph‟ change over
time…? Does this change have any
significance
6. Time
Things happen over time
Online Social Experience: capturing static
points on a continuum – tweets, fb updates
These static points are relevant for various
reasons:
Importance to self: what I value, what I find fun..
Importance to significant others: 'friends„
Where they happen e.g. I am having fun at
WhereCampAfrica in Nairobi, new place - new
experience
Time, or capturing (and sharing) moments in
time
Mobile Enhanced
7. Space
GPS
Lat, Lon
Commoditization – not hard to get a
GPS enabled device
Social commoditization – „ku-facebook’
Mobile Enhanced
8. Key Premises
People move from place to place, period
(geo-location)
People move for some purpose, and
have certain experiences there, and
want to share those experiences (social)
9. What are the chances that my
'motion' influencers are similar to
some other (known or unknown)
person who could be in the same
context? e.g. tourist in the same
town? attending a conference?
10. Creating a New Social
Experience
A framework that combines social +
location
NOT just social…. plus geotagging; but
geo as a central component
Three components:
Capture: collect social + location based info
Mine: mining that data, finding patterns,
search
Visualize: visualizing this data in a way that
makes sense
11. Case: GeoLife
A Microsoft Research (MSR Asia) Project
Xing Xie, Yu Zheng
“… GeoLife focuses on visualization,
organization, fast retrieval, and effective
understanding of GPS track logs for both
personal and public use. [A] platform for
people to effectively manage their GPS
data… understand a person‟s past
experience from GPS data.”
12. Case: GeoLife
Sharing life experiences with GPS
trajectories
Generic travel recommendation
Personalized location & friend
recommendation
13. GeoLife Architecture
GeoLife: Managing and Understanding your Past Life over Maps. Yu Zheng et al.
16. References
GeoLife: Building social networks using
human location history
http://research.microsoft.com/en-
us/projects/geolife
GeoLife: Managing and Understanding
your Past Life over Maps. Yu Zheng et al.
Longhao Wang, Yu Zheng, Xing Xie. A
Flexible Spatio- Temporal Indexing
Scheme for Large-Scale GPS Track
Retrieval. In Proc. of
MDM‟08, Beijing, China. 2008
Editor's Notes
twitterfacebook updatessocial data moving over timesocial graphtimeline
ppl move from one place to another period (geo-location)ppl move for some purpose (social aspect).... there's a patternwhat are the chances that my 'motion' influencers are similar to some other person who could be in the same context? e.g. tourist? attending a conference?
creating a new experiencea framework that combines social + location3 components:capture: collect social + location based infosearch: mining that data, finding patternsvisualizatio: visualizing this data in a way that makes sense