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Title
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A hybridised variable neighbourhood tabu search heuristic to increase security in a utility network
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Author
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Abstract
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| We propose a decision model aimed at increasing security in a utility network (e.g., electricity, gas, water or communication network). The network is modelled as a graph, the edges of which are unreliable. We assume that all edges (e.g., pipes, cables) have a certain, not necessarily equal, probability of failure, which can be reduced by selecting edge-specific security strategies. We develop a mathematical programming model and a metaheuristic approach that uses a greedy random adaptive search procedure to find an initial solution and uses tabu search hybridised with iterated local search and a variable neighbourhood descend heuristic to improve this solution. The main goal is to reduce the risk of service failure between an origin and a destination node by selecting the right combination of security measures for each network edge given a limited security budget. |
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Language
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English
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Source (journal)
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Reliability engineering and system safety. - Barking
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Publication
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Barking
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2016
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ISSN
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0951-8320
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DOI
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10.1016/J.RESS.2015.08.008
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Volume/pages
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145
(2016)
, p. 221-230
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ISI
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000365367300022
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Full text (Publisher's DOI)
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Full text (open access)
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Full text (publisher's version - intranet only)
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