Abstract
This paper presents a bicriteria approximation algorithm for the minimum submodular cost partial multi-cover problem (SCPMC), the goal of which is to find a minimum cost sub-collection of sets to fully cover q percentage of total profit of all elements, where the cost on sub-collections is a submodular function, and an element e with covering requirement \(r_e\) is fully covered if it belongs to at least \(r_e\) picked sets. Such a problem occurs naturally in a social network influence problem.
Assuming that the maximum covering requirement \(r_{\max }=\max _e r_e\) is a constant and the cost function is nonnegative, monotone non-decreasing, and submodular, we give the first \((O(b/q\varepsilon ),(1-\varepsilon ))\)-bicriteria algorithm for SCPMC, the output of which fully covers at least \((1-\varepsilon )q\)-percentage of the total profit of all elements and the performance ratio is \(O(b/q\varepsilon )\), where \(b=\max _e\left( {\begin{array}{c}f_e\\ r_{e}\end{array}}\right) \) and \(f_e\) is the number of sets containing element e. In the case \(r\equiv 1\), an \((O(f/q\varepsilon ),1-\varepsilon )\)-bicriteria solution can be achieved even when monotonicity requirement is dropped off from the cost function, where f is the maximum number of sets containing a common element.
Supported by NSFC (11771013, 11531011, 61751303) and Major projects of Zhejiang Science Foundation (D19A010003).
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Shi, Y., Zhang, Z., Du, DZ. (2018). A Bicriteria Approximation Algorithm for Minimum Submodular Cost Partial Multi-Cover Problem. In: Tang, S., Du, DZ., Woodruff, D., Butenko, S. (eds) Algorithmic Aspects in Information and Management. AAIM 2018. Lecture Notes in Computer Science(), vol 11343. Springer, Cham. https://doi.org/10.1007/978-3-030-04618-7_6
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