Calculate nearest neighbor degree?

[emmalijohansson]

I am pulling out some statistics from my network, but can't manage to figure out how to get the nearest neighbor degree, or average nearest neighbor degrees.

Anyone who knows? I'd be more than happy if!

[admin]

What is this metric?

[emmalijohansson]

I have a network where the nodes represent countries and the edges represent the "trade of land", weighted in hectares.

It's a directed network and some nodes are both targets and investors (sources)
Ex.
Indonesia has a node degree of 10 as it has 7 investors, but are investing in 3 countries itself. I want to be able to calculate the average node degree of Indonesia's nearest neighbors, and get this statistic for all nodes as a separate column in the data lab. Is this possible?

[admin]

It's not available, but you may code a metric plugin for it, or code some lines of python using Networkx.

Notice that the average is an unreliable statistic as it is very sensitive to outliers. You may better compute the median instead.

[gmagerman]

Hi,

Sebastien is right about the average especially when relating to power law distributions. However, the ANND or ANNS (avg nearest neighbor degree or -strength resp.) are used some times to estimate a degree of assortativity in the network: i.e. are higher degree nodes more likely to be connected to higher degree nodes.

Thank you for the code links, it might be good to estimate both & see the differences in real networks....