I'm new to this group. I've just looked for the FAQ unsucessfully, so I'm sorry if this question is addressed in it.
I have a set of data (images), which can be clustered in various ways. I wish to compare the results of various clustering techniques when applied to the same set of data - i.e. given two different clusterings of the same data, I want a number which is a measure of the similarity of the clusterings.
I imagine that this problem has been addressed before. I would be most grateful if someone could point me in the right direction, or suggest which literature I should consult.