• Title/Summary/Keyword: trip planning query (TPQ)

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An Adaptive Priority-based Sequenced Route Query Processing Method in Road Networks (도로 네트워크 환경에서 적응적 우선순위 기반의 순차적 경로 처리 기법)

  • Ryu, Hyeongcheol;Jung, Sungwon
    • KIISE Transactions on Computing Practices
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    • v.20 no.12
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    • pp.652-657
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    • 2014
  • Given a starting point, destination point and various Points Of Interest (POIs), which contain a full or partial order, for a user to visit we wish to create, a sequenced route from the starting point to the destination point that includes one member of each POI type in a particular order. This paper proposes a method for finding the approximate shortest route between the start point, destination point and one member of each POI type. There are currently two algorithms that perform this task but they both have weaknesses. One of the algorithms only considers the distance between the visited POI (or starting point) and POI to visit next. The other algorithm chooses candidate points near the straight-line distance between the start point and destination but does not consider the order of visits on the corresponding network path. This paper outlines an algorithm that chooses the candidate points that are nearer to the network path between the start point and destination using network search. The algorithm looks for routes using the candidate points and finds the approximate shortest route by assigning an adaptive priority to the route that visits more POIs in a short amount of time.