Interac(ve
Explora(on
of
Geospa(al
Network
Visualiza(on
CHI
2012
Till
Nagel,
Erik
Duval,
Andrew
Vande
Moere

Socializing
at
conferences

Tabletop
as
social
space

“
Studies
have
shown
geographic
proximity
is
important
and
does
posi6vely
influence
the
intensity
and
frequency
of
scien6fic
collabora6on.
J.S.
Katz.
Geographical
Proximity
and
ScienIfic
CollaboraIon.
Scientrometrics,
Vol.
31,
No.1
(1994)

Prototypes

Interac(ons
on
a
mul(touch
tabletop

Pan
Zoom
&
Rotate

Hints
for
non-­‐obvious
interac(ons

Demo
at
EC-­‐TEL
2010

User
study
at
EC-­‐TEL
2010
-­‐
FormaIve
user
study
-­‐
12
parIcipants
(9m,
3f,
27-­‐52
years)
-­‐
Execute
simple
tasks
-­‐
Think-­‐out-­‐loud
-­‐
Post-­‐test
quesIonnaire
on
saIsfacIon

Results
&
Observa(ons

Insufficient
geographical
informa(on

Insufficient
geographical
informa(on
Some
parIcipants
had
problems
in
finding
the
places
menIoned
in
the
tasks.
Possible
soluIons:
-­‐
Display
more
place
names
on
map
-­‐
Add
text
field
to
search
for
geographical
features
-­‐
Display
list
of
places,
and
allow
selecIon

Selec(ng
an
affilia(on

Selec(ng
an
affilia(on
When
asked
to
select
an
affiliaIon,
all
parIcipants
tapped
on
its
marker.
However,
users
had
difficul(es
selec(ng
a
single
affilia(on
from
overlapping
markers.
Possible
soluIons:
-­‐
Change
layout
algorithm
-­‐
Keep
clusters,
and
expand
them
on
demand

Quality
of
connec(ons
unclear

Quality
of
connec(ons
unclear
A
visual
connecIon
is
shown
between
two
affiliaIons
if
they
published
at
least
one
paper
together.
There
is
no
indica(on
of
the
amount
of
co-­‐wriTen
papers.
Possible
soluIons:
-­‐
Show
numbers
on
connecIon
-­‐
Map
number
into
visual
connecIon
representaIon

Top
3
Issues
1. Improve
map
style
2. Allow
single
selecIon
of
mulIple
affiliaIons
in
proximity
3. Visualize
quality
of
connecIons

Second
prototype

Quality
of
connec(ons

Enabling
selec(on
of
single
marker
in
a
cluster

Exploding
Menu

Demo
tudy
at
Hypertext
2011
User
s at
Hypertext
2011
-­‐ Same
setup
as
at
EC-­‐TEL
2010
-­‐
9
parIcipants

Social
Interac(ons
•
StarIng
discussions
•
ExploiIng
the
visualizaIon
for
story-­‐telling
•
Engaging
other
users

Conclusions

Lessons
learnt
•
Design
process
•
Map
style
•
Acceptance
of
mulItouch
interacIon
•
Radial
menu
for
dense
geospaIal
data

Future
work
•
Radial
menu
for
dense
geospaIal
data
•
Controlled
user
study
on
weighted
edges

Thank
you!
Ques(ons?
Till
Nagel,
Interac(on
Design
Lab
nagel@-­‐potsdam.de
–
twiTer:
@(llnm