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Erschienen in:
2011 | OriginalPaper | Buchkapitel
Thread Graphs, Linear Rank-Width and Their Algorithmic Applications
verfasst von : Robert Ganian
Erschienen in: Combinatorial Algorithms
Verlag: Springer Berlin Heidelberg
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The introduction of tree-width by Robertson and Seymour [7] was a breakthrough in the design of graph algorithms. A lot of research since then has focused on obtaining a width measure which would be more general and still allowed efficient algorithms for a wide range of NP-hard problems on graphs of bounded width. To this end, Oum and Seymour have proposed rank-width, which allows the solution of many such hard problems on a less restricted graph classes (see e.g. [3,4]). But what about problems which are NP-hard even on graphs of bounded tree-width or even on trees? The parameter used most often for these exceptionally hard problems is path-width, however it is extremely restrictive – for example the graphs of path-width 1 are exactly paths.