Conference paper
QALD-3: Multilingual question answering over linked data
Elena Cabrio, Philipp Cimiano, et al.
CLEF 2013
We discuss the problem of ranking nodes of a tree, which is a restriction of the general node coloring problem. A tree is said to have rank number k if its vertices can be ranked using the integers 1, 2,...,k such that if two nodes have the same rank i, then there is a node with rank greater than i on the path between the two nodes. The optimal rank number of a tree gives the minimum height of its node separator tree. We present an O(n log n) algorithm for optimal node ranking of trees. © 1988.
Elena Cabrio, Philipp Cimiano, et al.
CLEF 2013
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ACM TODAES
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