Table 2.

Ending criteria for identifying dimensions and characteristics

Ending criteriaSteps
Objective ending criteria 
No design methods can be merged or split3b
At least one design method is classified under each characteristic4a, 4b
Each characteristic is unique and cannot be repeated (no characteristic duplication)5a, 4b
Each dimension is unique and cannot be repeated (no dimension duplication)5a, 5b
No new dimensions or characteristics can be added in the last iteration5a, 5b
No dimensions or characteristics can be merged or split5a, 5b
Subjective ending criteria 
Concise: the number of dimensions is not unwieldy or overwhelming5a, 4b, 5b
Robust: enough dimensions and characteristics are available to classify design methods5a, 4b, 5b
Comprehensive: all identified design methods are classified within the taxonomy5a, 4b, 5b
Extendible: a new design method, characteristic and dimension can be easily added5a, 4b, 5b
Explanatory: the dimensions and characteristics can explain design methods5a, 4b, 5b
Source: Authors’ own creation

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