We consider the problem of removing a limited subset of nodes and/or edges from a graph in order to minimize the so-called pairwise connectivity of the residual graph, which is defined as the total cost of the pairs of nodes still connected by a path. This is a well-studied version of a family of problems known as critical node or edge detection problems. However, while most of the literature focuses on deleting nodes or edges separately, we allow the simultaneous removal of nodes and edges. We consider both the case in which the nodes and edges removed must satisfy a joint weight limit, and the case in which two separate weight limits are given for nodes and edges. We study the complexity of several problems of this type when the given graph is a tree, providing NP-hardness results or polynomial-time algorithms for the different cases that we analyze.
Critical node/edge detection problems on trees
Di Summa, M;Faruk, SMO
2023
Abstract
We consider the problem of removing a limited subset of nodes and/or edges from a graph in order to minimize the so-called pairwise connectivity of the residual graph, which is defined as the total cost of the pairs of nodes still connected by a path. This is a well-studied version of a family of problems known as critical node or edge detection problems. However, while most of the literature focuses on deleting nodes or edges separately, we allow the simultaneous removal of nodes and edges. We consider both the case in which the nodes and edges removed must satisfy a joint weight limit, and the case in which two separate weight limits are given for nodes and edges. We study the complexity of several problems of this type when the given graph is a tree, providing NP-hardness results or polynomial-time algorithms for the different cases that we analyze.File | Dimensione | Formato | |
---|---|---|---|
CNP-Faruk.pdf
accesso aperto
Descrizione: Articolo
Tipologia:
Published (publisher's version)
Licenza:
Creative commons
Dimensione
402.94 kB
Formato
Adobe PDF
|
402.94 kB | Adobe PDF | Visualizza/Apri |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.