Review Article

Towards Complexity and Dynamics: A Bibliometric-Qualitative Review of Network Research in Construction

Table 2

Description and interrater reliability of collected variables.

VariablesDescriptionsIRR

Research topics
Categories of network analysisCategorization of network research according to the type of node and the level of analysis0.894
Types of network relationsCommunication network, information and knowledge sharing network, collaboration network, etc.0.972
Research designs
Boundary specification methodsExogenously defined, relationally defined, and methodologically defined0.864
Data collection methodsSurvey and interview, databases, mixed, and others0.915
Research instruments
Degree centralityThe number of direct links with others [37]0.853
Betweenness centralityThe extent to which a node falls on the geodesic paths between others [38]0.830
Closeness centralityThe ease of connection from a node to all other nodes [38]0.933
Eigenvector centralityThe number of links weighted by the centrality of the connectors [39]0.827
Structure holeThe lack of a direct relation between two nonredundant cliques [40]0.824
Structural equivalenceThe extent to which two nodes share the same pattern of relations [41]1.000
Network densityThe extent of the connectivity of a network [42]0.887
Network cohesionThe extension of relational cohesion in the network level [42]0.827
Power-law degree distributionThe so-called “scale-free” property indicates few nodes having many links and many nodes having few links [43]0.918
Quantitative analysis methodsDescriptive analysis, correlation analysis, regression analysis, simulation analysis, and others0.926

Note: IRR in bold is measured based on percent agreement.