What is degree assortativity?
Degree assortativity is the tendency for nodes of high degree (resp. low degree) in a graph to be connected to high degree nodes (resp. to low degree ones). It is usually quantified by the Pearson correlation coefficient of the degree–degree correlation.
How to interpret assortativity?
The assortativity coefficient is the Pearson correlation coefficient of degree between pairs of linked nodes. Positive values of r indicate a correlation between nodes of similar degree, while negative values indicate relationships between nodes of different degree. In general, r lies between −1 and 1.
What does negative assortativity mean?
The assortativity ranges from –1 to +1, positive values meaning a tendency for nodes of similar degrees to connect to each other, negative values means that large-degree nodes tend to attach to low- degree nodes.
What is assortative property?
The assortativity coefficient quantifies the extent to which connected nodes share similar properties. It is analogous to the Pearson correlation coefficient but measures the correlation between every pair of nodes that are connected.
What does degree centrality mean?
Degree centrality is one of the easiest to calculate. The degree centrality of a node is simply its degree—the number of edges it has. The higher the degree, the more central the node is. This can be an effective measure, since many nodes with high degrees also have high centrality by other measures.
What is degree degree correlation?
Degree-degree correlation indicates the relationship between the node degrees, and it is often defined as the Pearson correlation coefficient of degrees between a connected node pair [4] (i.e., assortative coefficient ra). In this context, network controllability is defined as the proportion of the MDS to network size.
What is the strong triadic closure property?
Strong Triadic Closure Property is that if a node has strong ties to two neighbors, then these neighbors must have at least a weak tie between them.
What is out-degree?
(definition) Definition: The number of edges going out of a vertex in a directed graph. See also in-degree, sink, degree.
What are the three types of correlation?
There are three possible results of a correlational study: a positive correlation, a negative correlation, and no correlation. A positive correlation is a relationship between two variables in which both variables move in the same direction.
Is assortative mating good or bad?
Positive assortative mating increases genetic relatedness within a family, whereas negative assortative mating accomplishes the opposite effect. Also, positive assortative mating for behavioral traits allows for more efficient communication between the individuals and they can cooperate better to raise their offspring.