单词 | pathwidth |
释义 | BETA Examples ofpathwidthDictionary> Examples ofpathwidth pathwidthisn’t in the Cambridge Dictionary yet. You can help! Add a definition The class of graphs withpathwidthat most one requires two excluded minors. From theCambridge English Corpus Therefore, the degeneracy is at most equal to the treewidth and at most equal to thepathwidth. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Planar graphs that can be partitioned into nested cycles, and planar graphs of boundedpathwidth, have universal point sets of nearly-linear size. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In particular the maximal graphs ofpathwidthone are exactly the caterpillar trees. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For earlier approximation algorithms forpathwidth, see and. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A maximalpathwidth- "k" graph must be either a "k" -path or a "k" -caterpillar, two special kinds of "k" -tree. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The graphs with such drawings havepathwidththat is bounded by a function of "h" and "k". From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Additionally, for several special classes of graphs, such as trees, thepathwidthmay be computed in polynomial time without dependence on "k". From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Since path-decompositions are a special case of tree-decompositions, thepathwidthof any graph is greater than or equal to its treewidth. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Many problems in graph algorithms may be solved efficiently on graphs of boundedpathwidth, by using dynamic programming on a path-decomposition of the graph. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, the best known lower bound on thepathwidthof cubic graphs is smaller, 0.082 "n". From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Alternatively, thepathwidthmay be defined from interval graphs analogously to the definition of treewidth from chordal graphs. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. If this evader is invisible to the pursuers then the problem is equivalent to finding thepathwidthor vertex separation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Another parameter, the graph bandwidth, has an analogous definition from proper interval graphs, and is at least as large as thepathwidth. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The complexity of a vortex is limited by a parameter called its depth, closely related topathwidth. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The same dynamic programming method also can be applied to graphs with unboundedpathwidth, leading to algorithms that solve unparametrized graph problems in exponential time. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Pathwidthand path-decompositions are closely analogous to treewidth and tree decompositions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. As a consequence, thepathwidthof a graph is always at least as large as its treewidth, but it can only be larger by a logarithmic factor. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It remains open whether thepathwidthof a planar graph and its dual are always within a constant factor of each other in the remaining cases. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
随便看 |
|
英汉词典包含213609条英汉翻译词条,涵盖了常用英语单词及词组短语的翻译及用法,是英语学习的必备工具。