Voronoi diagram and its geometric dual, the Delaunay triangulation, both are practical geometric constructions which have been applied extensively in spatial analysis. Considering the low efficiency of the algorithm of indirectly building Voronoi diagram, this paper proposes an improved Voronoi diagram generation algorithm based on Delaunay triangulation of randomly distributed points in the Eu...

In resource planning scenarios, reverse $k$ nearest neighbor search plays an important role. However, the existing on trajectories only supports spatial features of trajectories. this article, we introduce neighbors query semantic (R NNST). Given a point from set geo-textual objects (e.g., POIs), finds those that take as one...

The complexity of the public sector generated by mobilisation and use significant financial resources, national cultural factors, heterogeneity provision services, numerous interested parties, increasing demand for quality information asymmetry, require an actor to provide credible assurance regarding proper management resources. In this context, performance audits are link between entities sta...