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- W1825657983 abstract "Unconstrained submodular maximization captures many NP-hard combinatorial optimization problems, including Max-Cut, Max-Dicut, and variants of facility location problems. Recently, Buchbinder et al. [4] presented a surprisingly simple linear time randomized greedy-like online algorithm that achieves a constant approximation ratio of $$frac{1}{2}$$ , matching optimally the hardness result of Feige et al. [10]. Motivated by the algorithm of Buchbinder et al., we introduce a precise algorithmic model called double-sided myopic algorithms. We show that while the algorithm of Buchbinder et al. can be realized as a randomized online double-sided myopic algorithm, no such deterministic algorithm, even with adaptive ordering, can achieve the same approximation ratio. With respect to the Max-Dicut problem, we relate the Buchbinder et al. algorithm and our myopic framework to the online algorithm and inapproximation of Bar-Noy and Lampis [2]." @default.
- W1825657983 created "2016-06-24" @default.
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- W1825657983 date "2014-01-01" @default.
- W1825657983 modified "2023-10-03" @default.
- W1825657983 title "Bounds on Double-Sided Myopic Algorithms for Unconstrained Non-monotoneSubmodular Maximization" @default.
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- W1825657983 doi "https://doi.org/10.1007/978-3-319-13075-0_42" @default.
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