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JCO
2010
97views more  JCO 2010»
13 years 9 months ago
Subhypergraph counts in extremal and random hypergraphs and the fractional q-independence
We study the extremal parameter N(n, m, H) which is the largest number of copies of a hypergraph H that can be formed of at most n vertices and m edges. Generalizing previous work...
Andrzej Dudek, Joanna Polcyn, Andrzej Rucinski
JCO
2010
56views more  JCO 2010»
13 years 9 months ago
Linear time construction of 5-phylogenetic roots for tree chordal graphs
William S. Kennedy, Hui Kong, Guohui Lin, Guiying ...
JCO
2010
75views more  JCO 2010»
13 years 9 months ago
A quadratic lower bound for Rocchio's similarity-based relevance feedback algorithm with a fixed query updating factor
Rocchio’s similarity-based relevance feedback algorithm, one of the most important query reformation methods in information retrieval, is essentially an adaptive supervised lear...
Zhixiang Chen, Bin Fu, John Abraham
JCO
2010
100views more  JCO 2010»
13 years 9 months ago
A class of error-correcting pooling designs over complexes
Abstract As a generalization of de-disjunct matrices and (w,r;d)-cover-freefamilies, the notion of (s,l)e-disjunct matrices is introduced for error-correcting pooling designs over ...
Tayuan Huang, Kaishun Wang, Chih-wen Weng
JCO
2010
123views more  JCO 2010»
13 years 9 months ago
Capacity inverse minimum cost flow problem
Given a directed graph G = (N, A) with arc capacities uij and a minimum cost flow problem defined on G, the capacity inverse minimum cost flow problem is to find a new capacit...
Çigdem Güler, Horst W. Hamacher
JCO
2010
67views more  JCO 2010»
13 years 9 months ago
Galaxy cutsets in graphs
Given a network G = (V, E), we say that a subset of vertices S ⊆ V has radius r if it is spanned by a tree of depth at most r. We are interested in determining whether G has a cu...
Nicolas Sonnerat, Adrian Vetta
JCO
2010
70views more  JCO 2010»
13 years 9 months ago
Worst-case analysis for on-line service policies
This paper considers an on-line scheduling problem occurred in a service system with two classes (normal and special) of customers and two types (dedicated and flexible) of serve...
Zhenbo Wang, Wenxun Xing
JCO
2010
169views more  JCO 2010»
13 years 9 months ago
An almost four-approximation algorithm for maximum weight triangulation
We consider the following planar maximum weight triangulation (MAT) problem: given a set of n points in the plane, find a triangulation such that the total length of edges in tria...
Shiyan Hu