Blocking Rumor by Cut |
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Authors: | Ling Gai Hongwei Du Lidong Wu Junlei Zhu Yuehua Bu |
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Institution: | 1.School of Management,Shanghai University,Shanghai,China;2.Department of Computer Science and Technology,Harbin Institute of Technology Shenzhen Graduate School,Shenzhen,China;3.Department of Computer Science,University of Texas at Tyler,Tyler,USA;4.College of Mathematics, Physics and Information Engineering,Jiaxing University,Jiaxing,China;5.Department of Mathematics,Zhejiang Normal University,Jinhua,China;6.Zhejiang Normal University Xingzhi College,Jinhua,China |
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Abstract: | In this paper, a rumor blocking problem is studied with an objective function which is neither submodular or supermodular. We will prove that this problem is NP-hard and give a data-dependent approximation with sandwich method. In addition, we show that every set function has a pair of monotone nondecreasing modular functions as upper bound and lower bound, respectively. |
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