So, early I had a proposed idea for a database showing interactions in the fanbase, but it was a bit overly complicated. Well, after seeing this: http://got-djent.com/article/map-djent-fourth-edition I have a new, hopefully better and actually doable idea, though I don't know the algorithms for creating proximity charts. Anyway, I'm simply seeking to create a proximity chart were artists who collaborate with each more are placed closer together. To do this, first a raw number representing the amount of interactions between combinations of musicians will be calculated. These will then be used as weights to generate a graph like common fans are used in the Map of Djent, however they did that.
Now, for calculating the raw number, I believe I've come up with a simple enough formula. It's simply a summation of values relating to every song connecting the two artists. Here are the corresponding values:
A song by artist 1 featured on an album or contest hosted by artist 2 - 1 Point
A cover or remix by artist 1 of a song by artist 2 - 2 Points
A direct collaboration between artists 1 - 5 Points
I think the best way to keep track of this is with two spread sheets, one recording the calculations, and one shows the final combinations between the artists.
So, for example, Avaitors and Bronyfied have collaborated on six songs now, I'm pretty sure neither of them have hosted a contest or compilation album, and as far as I know neither of them have remixed on the others songs. That gives them 5x6 = 30 points. That means that I have a pretty tight relationship.
After that is calculated for a set of brony musicians all that we need to be done is plug the data into some sort of algoritm that could plot a map based on it.