Journal of the Operations Research Society of China ›› 2019, Vol. 7 ›› Issue (3): 449-459.doi: 10.1007/s40305-019-00244-1

Special Issue: Discrete optimization

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Minimizing Ratio of Monotone Non-submodular Functions

Yi-Jing Wang1, Da-Chuan Xu1, Yan-Jun Jiang1,2, Dong-Mei Zhang3   

  1. 1 Department of Information and Operations Research, College of Applied Sciences, Beijing University of Technology, Beijing 100124, China;
    2 School of Mathematics and Statistics Science, Ludong University, Yantai 264025, Shandong, China;
    3 School of Computer Science and Technology, Shandong Jianzhu University, Jinan 250101, China
  • Received:2018-09-24 Revised:2019-03-03 Online:2019-09-30 Published:2019-10-08
  • Contact: Dong-Mei Zhang, Yi-Jing Wang, Da-Chuan Xu, Yan-Jun Jiang E-mail:zhangdongmei@sdjzu.edu.cn;yjwang@emails.bjut.edu.cn;xudc@bjut.edu.cn;jyjmath@emails.bjut.edu.cn

Abstract: In this paper, we investigate the problem of minimizing the ratio of normalized non-negative monotone non-submodular set function f and normalized non-negative monotone set function g. We take advantage of the greedy technique and get a performance guarantee depending on the generalized curvature and inverse generalized curvature of f, as well as the submodularity ratio of g. Our results generalize the works of Bai et al. (Algorithms for optimizing the ratio of submodular functions. In:Proceedings of the 33rd International Conference on Machine Learning, 2016) and Qian et al. (Optimizing ratio of monotone set functions. In:Proceedings of the 26th International Joint Conference on Artificial Intelligence, 2017).

Key words: Non-submodular, Set functions, Minimizing ratio, Greedy algorithm

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