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A comment on Show HN: Valhalla, an open source routing engine. Parent comment

Re:Show HN: Valhalla, an open source routing engine by glennon on Thursday June 04, 2015 @05:14PM (#9662109)
The OSRM routing engine appears to focus on contraction hierarchies; is that also the case for Valhalla? http://en.wikipedia.org/wiki/Contraction_hierarchies
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