METHOD AND SYSTEM FOR TIME-DEPENDENT ROUTING
    1.
    发明申请
    METHOD AND SYSTEM FOR TIME-DEPENDENT ROUTING 审中-公开
    用于时间依赖路由的方法和系统

    公开(公告)号:US20110251789A1

    公开(公告)日:2011-10-13

    申请号:US13018754

    申请日:2011-02-01

    IPC分类号: G01C21/26

    CPC分类号: G06Q10/08 G01C21/3446

    摘要: A method of determining a time-dependent route parameter for a transportation network, for use in an automated routing system in connection with traffic, transportation, and logistics is provided. While shortest distances from all source nodes in S to all target nodes in T are time-independent, travel times are not. The method models the transportation network and computes travel costs from an arbitrary starting node to a plurality of intermediate way-points, and from intermediate way points to the target node.

    摘要翻译: 提供了一种用于确定运输网络的时间依赖路线参数的方法,用于与交通,运输和物流有关的自动路由系统中。 尽管从S中的所有源节点到T中的所有目标节点的最短距离是与时间无关的,但是行进时间不是。 该方法建模运输网络,并计算从任意起始节点到多个中间路线点以及从中间路线点到目标节点的行车费用。

    Alternate directions in hierarchical road networks
    3.
    发明授权
    Alternate directions in hierarchical road networks 有权
    分层道路网络的替代方向

    公开(公告)号:US08824337B1

    公开(公告)日:2014-09-02

    申请号:US13420165

    申请日:2012-03-14

    申请人: Robert Geisberger

    发明人: Robert Geisberger

    摘要: Methods and systems for determining shortest paths between a source node and a target node in a road network are disclosed. An example method includes determining a hierarchy of nodes with a number of levels of a first graph and calculating a first shortest path between the source node and the target node traversing a meeting node in the first graph. The number of levels in the first graph is reduced. One or more second shortest paths between the source node and the target node traversing one or more meeting nodes in the second reduced graph is determined. The first shortest path is assigned as a primary route and the one or more second shortest paths are assigned as alternate routes.

    摘要翻译: 公开了用于确定道路网络中的源节点和目标节点之间的最短路径的方法和系统。 一个示例性方法包括:确定具有第一图表的多个级别的节点的层次结构,并且计算源节点和穿过第一图中的会议节点的目标节点之间的第一最短路径。 第一个图形中的级别数量减少了。 确定遍历第二缩减图中的一个或多个会议节点的源节点和目标节点之间的一个或多个第二最短路径。 第一最短路径被分配为主路由,并且一个或多个第二最短路径被分配为备用路由。