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In applied mathematics, transit node routing can be used to speed up shortest-path routing by pre-computing connections between common access nodes to a sub-network relevant to long-distance travel.
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nodes transit access node displaystyle used routing target contraction local shortest framework path selected hierarchy locality filter using approach routes
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Transit node routing | is a | static approach that requires pre-processing of pair-wise distances between important nodes in the graph | 0.90 | text |
| approaches using grids | instance of | transit node routing can be used to speed up shortest-path routing by pre-computing connections between common access nodes to a sub-network relevant to long-distance travel.Tra… | 0.80 | text |
| highway hierarchies | instance of | transit node routing can be used to speed up shortest-path routing by pre-computing connections between common access nodes to a sub-network relevant to long-distance travel.Tra… | 0.80 | text |
| contraction hierarchies | instance of | transit node routing can be used to speed up shortest-path routing by pre-computing connections between common access nodes to a sub-network relevant to long-distance travel.Tra… | 0.80 | text |
| freeways instead of e.g. urban roads | instance of | IntuitionLong-distance travel usually involves driving along a subset of the road network | 0.80 | text |
| grouping nodes in cells of an overlay grid | instance of | The following example implementations of this framework answer these questions using different underlying methods | 0.80 | text |
| a more sophisticated implementation based on contraction hierarchies.Geometrical approach using gridsIn a grid-based approach | instance of | The following example implementations of this framework answer these questions using different underlying methods | 0.80 | text |
| the bounding square of all nodes is equally subdivided into square cells.How are access nodes selected | instance of | The following example implementations of this framework answer these questions using different underlying methods | 0.80 | text |
| Dijkstra's algorithm or extensions thereof can be chosen.Space requirementsThe pre-computed distances between each node | instance of | therefore every suitable shortest-path algorithm | 0.80 | text |
| the corresponding access node as well as the pairwise distances between transit nodes need to be stored in distance tables.In the grid-based implementation outlined above | instance of | therefore every suitable shortest-path algorithm | 0.80 | text |
| this results in 16 bytes of storage that is required for each node of the road graph | instance of | therefore every suitable shortest-path algorithm | 0.80 | text |
| Transit node routing | related to Concrete instances | Transit | 0.60 | section |
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