I am trying to identify 6 clusters in a graph of authors. Authors are connected with an edge when they have co-authored on a paper. I have already created a clustering with K-means (6-Means) and with Agglomerative clustering. Now, I want to combine these two clustering approaches in order to get more accurate clusters. I am able to find corresponding clusters, but I have no clue on how to decide to which cluster an author belongs when the algorithms do not agree.
Possibly I could use some form of a linear combination, but I do not know how to apply this properly. Other methods might be possible, but I am not sure on that.