Fast transportation network traversal with hyperedges: (industrial paper)

Network data models are frequently used as a mechanism to solve wide range of problems typical for the GIS applications and transportation planning in particular. Because of their popularity and efficiency those models tend to grow in size and complexity. This growth however creates multiple scalability issues caused by the large number of network elements that have to be examined during the network traversal. In this paper we present an extension of our network model tailored towards improving the performance of hierarchical point to point solve operations. The proposed solution is based on introducing a new network edge type that we term hyperedges. We describe how hyperedges can be specified with a re-interpretation of our existing any-vertex connectivity policy on edges, discusses some modeling issues, and also provide insights of our implementation experience and the impact which those novel network elements have on the solve performance. Our solution is based on the existing database functionality (tables, joins, sorting algorithms) provided by a standard relational DBMS and has been implemented and tested and currently being shipped as a part of the ESRI ArcGIS 10.1 platform and all subsequent releases.

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