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» Engineering Shortest Path Algorithms
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STOC
2002
ACM
144views Algorithms» more  STOC 2002»
14 years 8 months ago
Improved decremental algorithms for maintaining transitive closure and all-pairs shortest paths
We present improved algorithms for maintaining transitive closure and all-pairs shortest paths/distances in a digraph under deletion of edges. For the problem of transitive closur...
Surender Baswana, Ramesh Hariharan, Sandeep Sen
FSTTCS
2010
Springer
13 years 5 months ago
Finding Sparser Directed Spanners
A spanner of a graph is a sparse subgraph that approximately preserves distances in the original graph. More precisely, a subgraph H = (V, EH ) is a k-spanner of a graph G = (V, E...
Piotr Berman, Sofya Raskhodnikova, Ge Ruan
ICALT
2006
IEEE
14 years 1 months ago
A Shortest Learning Path Selection Algorithm in E-learning
Generally speaking, in the e-learning systems, a course is modeled as a graph, where each node represents a knowledge node (KU) and two nodes are connected to form a semantic netw...
Chengling Zhao, Liyong Wan
WEA
2009
Springer
145views Algorithms» more  WEA 2009»
14 years 2 months ago
Batch Dynamic Single-Source Shortest-Path Algorithms: An Experimental Study
A dynamic shortest-path algorithm is called a batch algorithm if it is able to handle graph changes that consist of multiple edge updates at a time. In this paper we focus on fully...
Reinhard Bauer, Dorothea Wagner
WEA
2004
Springer
124views Algorithms» more  WEA 2004»
14 years 28 days ago
Experimental Studies of Symbolic Shortest-Path Algorithms
Abstract. Graphs can be represented symbolically by the Ordered Binary Decision Diagram (OBDD) of their characteristic function. To solve problems in such implicitly given graphs, ...
Daniel Sawitzki