QALD-3: Multilingual question answering over linked data
Elena Cabrio, Philipp Cimiano, et al.
CLEF 2013
Given an undirected n-vertex graph G and a set of n points in Rd, we wish to embed the vertices of G onto the points so as to minimize the total embedded edge length. Important special cases of this geometric embedding problem as those in which G is a binary tree, a cycle, or a star. We give fast approximation algorithms for embedding these graphs on the line and in the plane in several metrics. Our principal techniques are: a notion of "approximate geometric sorting" that can be computed in linear time, and fast approximation schemes for the minimum spanning tree problem in the plane. We expect that these approximation techniques can be applied to many geometric problems besides the embedding problem. We give the example of approximating the convex hull of a set of points in the plane. © 1992.
Elena Cabrio, Philipp Cimiano, et al.
CLEF 2013
Robert E. Donovan
INTERSPEECH - Eurospeech 2001
Fan Jing Meng, Ying Huang, et al.
ICEBE 2007
Ruixiong Tian, Zhe Xiang, et al.
Qinghua Daxue Xuebao/Journal of Tsinghua University