NDLI: Reverse k-nearest neighbour schedules in time-dependent road networks

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Reverse k-nearest neighbour schedules in time-dependent road networks

Content Provider	ACM Digital Library
Author	Kröger, Peer Nascimento, Mario A. Borutta, Felix Niedermayer, Johannes
Abstract	Despite the wealth of research published on reverse k-nearest neighbour (RkNN) queries very few attempts have been made to solve the problem in time-dependent networks, i.e., networks where the edge cost varies with time. A typical example of such network is one made of a city's streets. An interesting consequence of such assumption is that set of RkNNs can change over time even if the objects are not moving. We present an efficient algorithm that computes a RkNN schedule for a given time interval, e.g., one day. Once computed, such schedule allows one to find the RkNNs for any point within the given time interval doing a simple table lookup. We experimentally evaluate our novel methods using a straightforward solution, namely computing the RkNN set for every (discrete) instant within a time interval. Our results show that the proposed algorithms are orders of magnitude faster than such baseline approach.
Starting Page	1
Ending Page	10
Page Count	10
File Format	PDF
ISBN	9781450339674
DOI	10.1145/2820783.2820809
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2015-11-03
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Time dependent networks Knn queries Road networks Reverse-knn queries
Content Type	Text
Resource Type	Article

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