Table 4 Comparison between the extended taxonomy, the base taxonomy and Gumm’s taxonomy
Taxonomy | Basis | Dimensions | Structure | Procedure | Description | Validation |
|---|---|---|---|---|---|---|
Extended | Existing taxonomy, Systematic literature review and survey findings, and expert knowledge | 12 (all the identified dimensions) | Facet-based | Qualitative | Objectively described | Comparison with existing taxonomies and demonstration of utility using data from eight finished GSE projects. |
Base | Existing taxonomies, literature review and expert knowledge | 5 (GSE, location, legal entity, geographic distance and temporal distance) | Facet-based | Qualitative | Objectively described | Based on expert judgment, comparison with existing taxonomies and demonstration of utility by classifying GSE literature. |
Gumm’s | literature review | 3 (legal entity, geographic distance and temporal distance) | Facet-based | Qualitative | Subjectively described | Demonstration of utility using data from one finished GSE project. |