Institute of Mathematics, Hebei University of Technology, Tianjin 300401, China
School of Mathematics and Statistics, Shandong Normal University, Jinan 250358, China
College of Statistics and Data Science, Beijing University of Technology, Beijing 100124, China
Department of Operations Research and Information Engineering, Beijing University of Technology, Beijing 100124, China
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Abstract
Min-max disagreements are an important generalization of the correlation clustering problem (CorCP). It can be defined as follows. Given a marked complete graph , each edge in the graph is marked by a positive label "" or a negative label "" based on the similarity of the connected vertices. The goal is to find a clustering of vertices , so as to minimize the number of disagreements at the vertex with the most disagreements. Here, the disagreements are the positive cut edges and the negative non-cut edges produced by clustering . This paper considers two robust min-max disagreements: min-max disagreements with outliers and min-max disagreements with penalties. Given parameter , we first provide a threshold-based iterative clustering algorithm based on LP-rounding technique, which is a -bi-criteria approximation algorithm for both the min-max disagreements with outliers and the min-max disagreements with outliers on one-sided complete bipartite graphs. Next, we verify that the above algorithm can achieve an approximation ratio of for min-max disagreements with penalties when we set parameter .
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