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MOBIHOC
2005
ACM
15 years 9 months ago
Localization and routing in sensor networks by local angle information
Location information is very useful in the design of sensor network infrastructures. In this paper, we study the anchor-free 2D localization problem by using local angle measureme...
Jehoshua Bruck, Jie Gao, Anxiao Jiang
CPM
2001
Springer
130views Combinatorics» more  CPM 2001»
15 years 2 months ago
On-Line Construction of Compact Directed Acyclic Word Graphs
Directed Acyclic Word Graph (DAWG) is a space efficient data structure that supports indices of a string. Compact Directed Acyclic Word Graph (CDAWG) is a more space efficient vari...
Shunsuke Inenaga, Hiromasa Hoshino, Ayumi Shinohar...
GD
2006
Springer
15 years 1 months ago
Computing Geometric Minimum-Dilation Graphs Is NP-Hard
We prove that computing a geometric minimum-dilation graph on a given set of points in the plane, using not more than a given number of edges, is an NP-hard problem, no matter if ...
Rolf Klein, Martin Kutz
JCO
2007
76views more  JCO 2007»
14 years 10 months ago
Wide diameters of de Bruijn graphs
Abstract The wide diameter of a graph is an important parameter to measure faulttolerance of interconnection network. This paper proves that for any two vertices in de Bruijn undir...
Jyhmin Kuo, Hung-Lin Fu
NAACL
2007
14 years 11 months ago
Are Very Large N-Best Lists Useful for SMT?
This paper describes an efficient method to extract large n-best lists from a word graph produced by a statistical machine translation system. The extraction is based on the k sh...
Sasa Hasan, Richard Zens, Hermann Ney