Method for determining exits and entrances for a region in a network
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United States of America Patent
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Jun 29, 1999
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N/A
app pub date -
Nov 25, 1996
filing date -
Nov 25, 1996
priority date (Note) -
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Abstract
A system is employed for finding a path in a network between an origin in a first region and a destination in a second region. In finding this path, the system finds three paths: a path between the origin and an exit node for the first region, a path between an entrance node for the second region and the destination, and a path between the exit node and the entrance node. These three paths are combined to construct the path between the origin and the destination. A set of nodes for use as exit nodes or entrance nodes for a region may be identified by identifying a set of boundary nodes for the region and identifying a set of target nodes. The target nodes are each separated from the region by a sufficient cost. The set of target nodes may serve as a set of exit nodes or entrance nodes. The set of target nodes may also be modified to improve its operation as a set of exit nodes or entrance nodes.
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