Analyzing Knowledge Retrieval Impairments Associated with Alzheimer’s Disease Using Network Analyses

Table 1

Network measures.

Measure	Definition
Number of nodes	The total number of nodes in a network
Diameter	The longest shortest-path between any two nodes in a network
Density	A ratio of the number of edges in a network compared to the total number of possible edges in that network
Average shortest-path length	The average length of the shortest-paths between all pairs of nodes
Clustering coefficient	A measure of a network’s tendency for a node’s neighbors to be connected to each other, defined as 3 times the number of triangles over the number of connected triplets [44]
Small-world coefficient	A measure of a network’s “small-worldness” [45]. A small-world network refers to one that has a high clustering coefficient but low average shortest-path length
Node degree	The number of edges connected to a node. Mean degree is the average of every node’s degree in a network