Abstract
In this paper, we introduce the Maximum Matrix Contraction problem, where we aim to contract as much as possible a binary matrix in order to maximize its density. We study the complexity and the polynomial approximability of the problem. Especially, we prove this problem to be NP-Complete and that every algorithm solving this problem is at most a \(2\sqrt{n}\)-approximation algorithm where n is the number of ones in the matrix. We then focus on efficient algorithms to solve the problem: an integer linear program and three heuristics.
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Notes
- 1.
The meaning of \([\![p; q ]\!]\) is the list \([p,p+1,\dots , q]\).
- 2.
The implementations can be found at https://github.com/mouton5000/MMCCode.
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© 2016 Springer International Publishing Switzerland
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Watel, D., Poirion, PL. (2016). The Maximum Matrix Contraction Problem. In: Cerulli, R., Fujishige, S., Mahjoub, A. (eds) Combinatorial Optimization. ISCO 2016. Lecture Notes in Computer Science(), vol 9849. Springer, Cham. https://doi.org/10.1007/978-3-319-45587-7_37
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DOI: https://doi.org/10.1007/978-3-319-45587-7_37
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