Summary of homophily

Predictive Analytics using Networked Data in R

María Óskarsdóttir, Ph.D.

Postdoctoral researcher

Can I do predictive analytics with my network?

Are the relationships between nodes important?

Are the labels randomly spread through the network or is there some structure?

Is the network homophilic?

# Heterophilicity
e_mixed / m_mixed

N <- 40
E <- 39
n_green <- 10
n_white <- 30
e_green <- 6
e_mixed <- 13

p <- 2 * E / N / (N-1)
m_green <- n_green * (n_green-1)/2 * p
m_mixed <- n_green * n_white * p

# Dyadicity
e_green / m_green

2.666667

0.8666667

$\Rightarrow$ Homophilic

Let's practice!

Predictive Analytics using Networked Data in R