Abstract:In the classic Target Set Selection problem, we are asked to minimise the number of nodes to activate so that, after the application of a certain propagation process, all nodes of the graph are active. Bazgan and Chopin [Discrete Optimization, 14:170-182, 2014] introduced the opposite problem, named Harmless Set, in which they ask to maximise the number of nodes to activate such that not a single additional node is activated.In this paper we investigate how sparsity impacts the tractability of Harmless Set. … Show more
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