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- W4225665792 abstract "We study the network untangling problem introduced by Rozenshtein, Tatti, and Gionis [DMKD 2021], which is a variant of Vertex Cover on temporal graphs -- graphs whose edge set changes over discrete time steps. They introduce two problem variants. The goal is to select at most $k$ time intervals for each vertex such that all time-edges are covered and (depending on the problem variant) either the maximum interval length or the total sum of interval lengths is minimized. This problem has data mining applications in finding activity timelines that explain the interactions of entities in complex networks. Both variants of the problem are NP-hard. In this paper, we initiate a multivariate complexity analysis involving the following parameters: number of vertices, lifetime of the temporal graph, number of intervals per vertex, and the interval length bound. For both problem versions, we (almost) completely settle the parameterized complexity for all combinations of those four parameters, thereby delineating the border of fixed-parameter tractability." @default.
- W4225665792 created "2022-05-05" @default.
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- W4225665792 date "2022-04-06" @default.
- W4225665792 modified "2023-10-16" @default.
- W4225665792 title "Disentangling the Computational Complexity of Network Untangling" @default.
- W4225665792 doi "https://doi.org/10.48550/arxiv.2204.02668" @default.
- W4225665792 hasPublicationYear "2022" @default.
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