Name | Measurement and Meaning |
---|---|
Node | Corresponding to the region of interest defined using parcellation atlas and it is constant in the snapshot static graph at each sliding-window. |
Contact | Connection linking a pair of nodes in the snapshot static graphs at each sliding-window. |
Sparsity | The ratio of the number of existing contacts divided by the maximum possible number of contacts in the snapshot static graphs. |
Aggregated network | Aggregate the contacts over the entire network lifetime, ie, a connection between a pair of nodes would be determined to exist if the pair of nodes is linked by at least one contact at any time step. |
Edge | Connection linking a pair of nodes in the aggregated network. |
Temporal distance () |
τ i→j(t) is defined as the smallest number of time steps required to reach node j from node i starting at time t. Temporal distance is a measure in the time domain, with the smallest value being 1 (when i and j are connected through a static path at time t irrespective of the geometric distance of the static path) and the largest value being infinity (when no time-respecting path exists from i to j at time t. |
Temporal global efficiency (Etglob) |
E t glob measures how efficient the overall information is exchanged in a time- varying system. |
Temporal local efficiency (Etloc) |
E t loc measures the overall resilience of the temporal network to local failures caused by the removal of any node at any time step. |
Temporal nodal efficiency (Etnodal(G, i)) |
E t nodal(G, i) measures the ability of temporal information transmission of node i in the temporal network: a node with high Etnodal(G, i) indicates greater interconnectivity with other nodes in the temporal network. |