Design Space
Design space Design is all about making decisions
“What is common among design spaces is that they make design decisions explicit, summarize what is possible, and what is under-explored.”
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Dimensional Reasoning and Research Design Spaces, S. MacNeil, J. Okerlund, C. Latulipe,
C&C 2017, June 27–30, 2017, Singapore
£30, Bosch
£50, Breville
£30, Cuisinart
£10, Breville
Which toaster would you buy? And why?
£30, Bosch
£50, Breville
£30, Cuisinart
£10, Breville
Which toaster would you buy? And why?
£30, Bosch
£50, Breville
£30, Cuisinart
£10, Breville
Which criterion is most important to you?
Choosing a toaster: the nature of choice Price: £10, £30, £50, £55
Colour: blue, red, green
Size: small, medium large
Brand: Bosch, Cuisinart, Dash, Breville
Design space: definition
• Each decision is a dimension
• Each dimension has a range of values
• Each design is a point in n-dimensional space
• Dimensions may interact with each other
• Constraints may indicate that some of the space is not available
• Some areas of the space might be preferable to to others
Design justification explains why one particular point has been chosen instead of another
Identify the runner
HG finishing time PT
race distance race climb
Machine Learning Black box
……more rows about races these runners have taken part in
Visualising the results, for 500 ML trials
output categorisation
input data
Design is all about choices
– which data to present
– which visualisation method to use
– what order to present the data categories in the
visualisation
– what colours, what fonts, size….
Data choice
Data choice
Data choice
Data choice
%incorrect
Data choice
%incorrect
Data choice
%incorrect
output (as %)
Data choice
%incorrect
output (as %)
Data choice
%incorrect
output (as %)
Visualisation choices: from Excel
Set of visualisation choices
You need to choose one data set and one visualisation from the 8 x 7 = 56 options This is design
clustered column
100% stacked column
stacked column
stacked line
Data choice
%incorrect
Two dimensions of choice
clustered column
100% stacked column
stacked column
stacked line
1×4 (correct)
1×4 (incorrect)
1×4 (%correct)
1×4 (%incorrect)
4×4 (all data)
4×4 (all, as %)
1×1 (%correct)
2D design space, constraints (8.5mins)
Design is all about choices
– which data to present
– which visualisation method to use
– what order to present the data categories in the visualisation
– what colours, what fonts, size….
Every design is a single point in the multidimensional design space
Design space
“What is common among design spaces is that they make design decisions explicit, summarize what is possible, and what is under-explored”…
…and what is not possible or not desirable
Dimensional Reasoning and Research Design Spaces, S. MacNeil, J. Okerlund, C. Latulipe,
C&C 2017, June 27–30, 2017, Singapore
Design Space
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