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Correlation clustering: Let all the flowers bloom!

Aszalós László, Bakó Mária

Annals of Computer Science and Information Systems

2019

Vol. 20

21--28

Correlation clustering is a NP-hard problem, and for large signed graphs finding even just a good approximation of the optimal solution is a hard task. In this article we examine the effect of ranking of the nodes and process them in order of ranks. We present that based on the rate of positive edges in the graph we should use different optimization methods. We show that all the building blocks of our methods are needed under certain circumstances.