Finding Large Example Graphs

Question

I am doing a project that involves processing large, sparse graphs. Does anyone know of any publicly available data sets that can be processed into large graphs for testing? I'm looking for something like a Facebook friend network, or something a little smaller with the same flavor.

Answer 1

If you asked nicely, you might be able to get Brian O'Meara's data set for treetapper. It's a pretty nice example of real-world data in that genre. Particularly, you'd probably be interested in the coauthorship data.

http://www.treetapper.org/

http://www.brianomeara.info/

Answer 2

Github's API is nice for building out graphs. I've messed around using the python lib networkx to generate graphs of that network. Here's some sample code if you're interested.