Table 2 Notation symbol and explanation.
Notation symbol | Explanation |
|---|---|
\(N\subseteq \{n_1, n_2,..., n_n \}\) | Nodes in physical topology |
\(L\subseteq \textit{N} \times \textit{N}\) | Links between physical nodes |
\(T_{in } \in \{n_1, n_2,..., n_n \}\) | Tunnel ingress |
\(T_{e } \in \{n_1, n_2,..., n_n \}\) | Tunnel egress |
\(\vec {T}\in \textit{T}_{in } \times \textit{T}_{e }\) | Tunnel vector from ingress to egress |
\(P=(N, L)\) | Physical topology |
\(N'\in \{\textit{T}_{in }, \textit{T}_{e } \}\) | Nodes in virtual topology |
\(L'\subseteq \{\vec {T}\}\) | Virtual links created by tunnel |
\(V=(N', L')\) | Virtual topology |
\(F_{l }\) | Importance of link |
H(P) | Topology entropy of the topology P |
\(I_{l}\) | Importance ratio of link l |
\(F_{avg}(P)\) | Importance average of links in topology P |
\(F_{var}(P)\) | Importance variance of links in topology P |
\({FR}_{avg}(P)\) | Rate of decline of importance average |
\({FR}_{var}(P)\) | Rate of decline of importance variance |
\(sim(P, V) \in [0, 1]\) | Similarity score between topology P and V |
BC(n) | Betweenness Centrality, BC |
CC(n) | Closeness Centrality, CC |
