Description: 带权有向图的最短路径及拓补排序算法,用于计算最短路径的算法-Weighted directed graph of shortest paths and expand up sorting algorithm used to calculate the shortest path algorithm Platform: |
Size: 5120 |
Author:steven |
Hits:
Description: A shortest path tree, in graph theory, is a subgraph of a given (possibly weighted) graph constructed so that the distance between a selected root node and all other nodes is minimal. It is a tree because if there are two paths between the root node and some vertex v (i.e. a cycle), we can delete the last edge of the longer path without increasing the distance from the root node to any node in the subgraph.
If every pair of nodes in the graph has a unique shortest path between them, then the shortest path tree is unique. This is because if a particular path from the root to some vertex is minimal, then any part of that path (from node u to node v) is a minimal path between these two nodes.
In graphs with no negative distances, Dijkstra s algorithm computes the shortest path tree, from a given vertex. In graphs with possibly negative distances, the Bellman-Ford algorithm can be used instead. Platform: |
Size: 7168 |
Author:darulor |
Hits:
Description: In computer science, the Floyd–Warshall algorithm (also known as Floyd s algorithm, Roy–Warshall algorithm, Roy–Floyd algorithm, or the WFI algorithm[clarification needed]) is a graph analysis algorithm for finding shortest paths in a weighted graph (with positive or negative edge weights). Platform: |
Size: 1024 |
Author:ww |
Hits:
Description: Many interesting route planning problems can be solved by computing shortest paths
in a suitably modeled, weighted graph representing a transportation network. Such networks
are naturally road networks or timetable networks of public transportation. For
large networks, the classical Dijkstra algorithm to compute shortest paths is too slow.
And therefore have faster algorithms been developed in recent years. These new algorithms
have in common that they use precomputation and store auxiliary data to speedup
subsequent shortest-path queries. Platform: |
Size: 28672 |
Author:manolin |
Hits:
Description: Many interesting route planning problems can be solved by computing shortest paths
in a suitably modeled, weighted graph representing a transportation network. Such networks
are naturally road networks or timetable networks of public transportation. For
large networks, the classical Dijkstra algorithm to compute shortest paths is too slow.
And therefore have faster algorithms been developed in recent years. These new algorithms
have in common that they use precomputation and store auxiliary data to speedup
subsequent shortest-path queries. Platform: |
Size: 11264 |
Author:manolin |
Hits:
Description: From a given vertex in a weighted connected graph, find shortest paths to other vertices using Dijkstra’s algorithm. Platform: |
Size: 1024 |
Author:jcdc987 |
Hits:
Search - Shortest paths in a weighted graph