3. Content
Introduction
What? Why? How?
Design choices
Paper prototype
Digital prototype
Expert evaluation
Evaluation digital prototype
What we learned
Teamwork
Technical issues
Future work
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4. What to visualize?
Difference between LAK and EDM data
Localization of the subjects
Differences between participating
universities (number of written papers)
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5. Why this?
Interesting to know where people are
writing about a certain subject
LAK and EDM have a comparable research
domain
➠ visualize the differences
Quantity is also visualized, to see where a
lot of research is done about a subject
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6. How did we do this?
Beginning
Simple map with marker
for the associations
map with EDM versus
LAK data
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7. How did we do this?
Rapid prototyping
Paper prototype
First digital version
Expert evaluation
Second digital version
Evaluation digital version
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9. Design choices
Conflict:
Visualize the quantity of papers
e.g. in the US more publications than in
Guatemala
Visualize distribution between LAK and
EDM
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10. Design choices
Continue working with bar charts
Markers are too close together
Bar can get really long
Not clear to which association it belongs
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11. Design choices
Pie chart
Located at the center
of the association
Unreadable when
zoomed out or many
associations close together
Hard to compare associations (number of
papers not clear)
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12. Design choicesPop-ups
Clear to which
association it belongs
Map not flooded with
- potentially unwanted -
information
Small markers on the map itself
Hover over association
to see the name
Colored countries
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14. Pop-ups?
Visualize information about one association
Visualize differences between two
associations
2 options were evaluated by use of paper
prototype
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26. Evaluation
Some remarks during user test
‘Compare’ and ‘Search’ button are placed
too close together.
Dots in the map might be mistaken for
capital cities
Axis should be calibrated on the pop-ups
Can you only push the ‘Compare’ button if
(more than) one association is selected?
Compare more than two associations?
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29. Changes
Scale : no continuous colors, but discrete
➠ beter visualize the differences
Location of search and compare button are
(hopefully) better
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41. Expert evaluation
Transparency adds too much complexity to
the overview map
➠ chose what to visualize (switched view?)
Small markers visible at a higher level?
Keep an overview of the entire map while
zoomed in
Graph in compare view is confusing
Evaluation over time?
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44. Evaluation - remarks
Radio buttons difficult to see
Hard to click the ‘compare city’ button
➠ caused by the computer
Graphs : unclear x-axis
Interesting to look at multiple cities,
since there is mostly only one paper about a
subject
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47. What we learned
Some associations have a strong preference
for one of the conferences
‘learning’ gives a divided image
Learning analytics and
machine learning both
concern learning
Visualize both conferences
Social network analysis
mainly LAK
only popular in certain countries
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48. What we learned
Some associations have a strong preference
for one of the conferences
‘learning’ gives a divided image
Learning analytics and
machine learning both
concern learning
Visualize both conferences
Social network analysis
mainly LAK
only popular in certain countries
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49. What we learned
Important to get an idea about the data
Important to get an idea about what what
people want to know about the data
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51. Teamwork?
First meeting to look at what we wanted and
how we wanted to do visualize it
Divided the tasks
Everyone did their part
Greet did evaluation, Anne and Ward worked
on the changes
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53. Technical issues?
Clash between markers and pop-ups
Location of universities
Naming of university
e.g. Katholieke Universiteit Leuven vs.
K.U.Leuven
Coloring countries
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55. Future work
White-space in compare boxes
More information about a paper or
university
Evaluation over time
Search option when selected “# papers”
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