Table 1.
Configuration | Values |
---|---|
Analysis unit | Keywords, authors, WoS |
Frequency threshold | Keywords: P1 = (3), P2 = (4), P3 = (5) |
Authors: PX = (4) | |
Network type | Co-occurrence |
Co-occurrence union value threshold | Keywords: P1 = (2), P2 = (2), P3 = (2) |
Authors: PX = (2) | |
Normalization measure | Equivalence index: eij = cij2/root (ci–cj) |
Clustering algorithm | Maximum size: 9; minimum size: 3 |
Evolutionary measure | Jaccard index |
Overlapping measure | Inclusion rate |