Volume centrality
Volume centrality
, also known as the
Distributed Assessment of the Closeness Centrality Ranking
(DACCER), is a semi-local centrality measure based on the degrees of nodes within an \(r\)-hop neighborhood [2]. The centrality score \(c_{V}(i)\) of a node \(i\) is defined as
\[
c_{V}(i) = \sum_{j \in \mathcal{N}^{(\leq r)}(i)} d_j,
\]
where \(\mathcal{N}^{(\leq r)}(i)\) denotes the set of nodes located within a topological distance \(r\) from node \(i\) (including \(i\) itself).
Wehmuth and Ziviani [2] empirically demonstrated that volume centrality achieves good performance for \(r = 2\). This measure generalizes the
sphere degree
introduced by da F. Costa et al. [3], which corresponds to the special case of volume centrality with \(r = 2\). For \(r = 1\), Pei et al. [4] showed that volume centrality can outperform in-degree and PageRank centralities in certain empirical networks.