Figure 5From: The research for protecting location privacy based on V-W algorithmThe flow of the V-W algorithm. The V-M algorithm is made up of three stages. The first stage, pre-processing stage, adopts the voronoi map to divide the road network. The second stage, road search stage, mainly implements the search in the output road set of the pre-processing stage. The third stage, extended search stage, is if the second stage cannot find the targeted road, the extended search must be implemented in the neighboring area.Back to article page