Modularity Tulips for the D4.5 deliverable

For further insight, modularity analysis was performed. The modularity value of a network is a number between zero and one. Zero indicates that the network has no discernible community structure: its pattern of linking is indistinguishable from that generated by a random process. High values indicate a pattern of linking that is unlikely to be random. The reduced network of Figure 2 is highly modular (Q = 0.72), which means it resolves quite naturally into a number of communities of codes, six in our case. Figure 3 shows the same network as Figure 2, but this time codes and edges are color-coded according to the community of codes they are part of, as detected by the Louvain algorithm (Blondel et al 2008).

An ethnography of CE in the automotive industry (1st version)
Authors: Veronica Davidov, Alberto Cottica (Edgeryders), 31/08/2022

Figure 3. Modularity analysis of the network of Figure 2. The network resolves quite naturally into seven communities of codes, coded by color.

Zoom ins

The green codes are related to pros and cons of electronics in cars

The red codes are related to materiality and the circular economy

The pink codes are related to personal expertise networks

The dark green codes are related to deliberation/consideration by drivers

The yellow codes are related to data sharing and surveillance

The blue codes are related to systemic consideration of sustainability (batch 1)

The orange codes are related to systemic consideration of sustainability (batch 2)