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View all- Hotz GWu H(2006)On the arrangement complexity of uniform treesFoundations of Computer Science10.1007/BFb0052102(337-350)Online publication date: 16-May-2006
We present a straighforward proof that the uniform orientation Steiner tree problem, also known as the λ-geometry Steiner tree problem, is NP-hard whenever the number of orientations, λ, is a multiple of 3. We also briefly outline how this result can be ...
The concept of hotlink assignment aims at reducing the navigation effort for users of a web directory or similar structure by inserting a limited number of additional hyperlinks called hotlinks. Given an access probability distribution of the leaves of ...
An independency (cliquy) tree of an n-vertex graph G is a spanning tree of G in which the set of leaves induces an independent set (clique). We study the problems of minimizing or maximizing the number of leaves of such trees, and ...
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