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WEA
2007
Springer
117views Algorithms» more  WEA 2007»
13 years 10 months ago
Better Landmarks Within Reach
We study the real algorithm for the point-to-point shortest path problem. It combines A∗ search search, landmark-based lower bounds, and reach-based pruning. We suggest several ...
Andrew V. Goldberg, Haim Kaplan, Renato Fonseca F....
WEA
2007
Springer
125views Algorithms» more  WEA 2007»
13 years 10 months ago
Simple Compression Code Supporting Random Access and Fast String Matching
Given a sequence S of n symbols over some alphabet Σ, we develop a new compression method that is (i) very simple to implement; (ii) provides O(1) time random access to any symbol...
Kimmo Fredriksson, Fedor Nikitin
WEA
2007
Springer
120views Algorithms» more  WEA 2007»
13 years 10 months ago
Experimental Study of Geometric t-Spanners: A Running Time Comparison
Mohammad Farshi, Joachim Gudmundsson
WEA
2007
Springer
97views Algorithms» more  WEA 2007»
13 years 10 months ago
Experimental Evaluations of Algorithms for IP Table Minimization
Abstract. The continuous growth of the routing tables sizes in backbone routers is one of the most compelling scaling problems affecting the Internet and has originated considerab...
Angelo Fanelli, Michele Flammini, Domenico Mango, ...
WEA
2007
Springer
87views Algorithms» more  WEA 2007»
13 years 10 months ago
Algorithms for Longer OLED Lifetime
Abstract. We consider an optimization problem arising in the design of controllers for OLED displays. Our objective is to minimize the amplitude of the electrical current flowing ...
Friedrich Eisenbrand, Andreas Karrenbauer, Chihao ...
WEA
2007
Springer
74views Algorithms» more  WEA 2007»
13 years 10 months ago
Landmark-Based Routing in Dynamic Graphs
Many speed-up techniques for route planning in static graphs exist, only few of them are proven to work in a dynamic scenario. Most of them use preprocessed information, which has ...
Daniel Delling, Dorothea Wagner
WEA
2007
Springer
98views Algorithms» more  WEA 2007»
13 years 10 months ago
An Alternative Ranking Problem for Search Engines
Corinna Cortes, Mehryar Mohri, Ashish Rastogi
WEA
2007
Springer
112views Algorithms» more  WEA 2007»
13 years 10 months ago
Crossing Minimization in Weighted Bipartite Graphs
Given a bipartite graph G = (L0, L1, E) and a fixed ordering of the nodes in L0, the problem of finding an ordering of the nodes in L1 that minimizes the number of crossings has ...
Olca A. Çakiroglu, Cesim Erten, Ömer K...
WEA
2007
Springer
158views Algorithms» more  WEA 2007»
13 years 10 months ago
A Primal Branch-and-Cut Algorithm for the Degree-Constrained Minimum Spanning Tree Problem
The degree-constrained minimum spanning tree (DCMST) is relevant in the design of networks. It consists of finding a spanning tree whose nodes do not exceed a given maximum degree...
Markus Behle, Michael Jünger, Frauke Liers
WEA
2007
Springer
111views Algorithms» more  WEA 2007»
13 years 10 months ago
Vertex Cover Approximations on Random Graphs
Abstract. The vertex cover problem is a classical NP-complete problem for which the best worst-case approximation ratio is 2− o(1). In this paper, we use a collection of simple g...
Eyjolfur Asgeirsson, Clifford Stein