The Core Might Change Anyhow We Define It: The Instability of Key Actors in Longitudinal Social Network Data

Table 2

Size statistics of opinion leaders (top-1 influencers) for the centrality measures computed on the advice-seeking networks (221 networks).

Centrality	Mean	Variance	No. of unique cases
In-degree	1.5782	0.7557	128
PageRank	1.0047	0.0047	210
Two-hop neighbourhood	1.9383	2.1621	114
Coreness	11.6825	29.193	0
Eigenvector	1.0	0	221
Borda count aggregation	1.085	0.0875	194