Ultrafast Shortest-Path Queries via Transit Nodes
نویسندگان
چکیده
منابع مشابه
TRANSIT Ultrafast Shortest-Path Queries with Linear-Time Preprocessing
We introduce the concept of transit nodes, as a means for preprocessing a road network, with given coordinates for each node and a travel time for each edge, such that point-to-point shortest-path queries can be answered extremely fast. The transit nodes are a set of nodes as small as possible with the property that every shortest path that is non-local in the sense that it covers a certain not...
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When you drive to somewhere ‘far away’, you will leave your current location via one of only a few ‘important’ traffic junctions. Recently, other research groups and we have largely independently developed this informal observation into transit node routing, a technique for reducing quickest-path queries in road networks to a small number of table lookups. The contribution of our paper is twofo...
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When you drive to somewhere ‘far away’, you will leave your current location via one of only a few ‘important’ traffic junctions. Starting from this informal observation, we develop an algorithmic approach—transit node routing— that allows us to reduce quickest-path queries in road networks to a small number of table lookups. We present two implementations of this idea, one based on a simple gr...
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تاریخ انتشار 2006