*Practical Application Using the Clustering Algorithm DOI: http://dx.doi.org/10.5772/intechopen.99314*

algorithm is the Euclidean calculation method. Unlike the convex hull method in **Figure 6**, the Voronoi algorithm's classification method can divide regions without shadowed areas of the Korean Peninsula.

We compare the existing administrative districts in Korea [19], the regional classification method using the convex hull method, and the Voronoi algorithm. Existing administrative districts are classified according to the criteria defined in the Administrative District Practice Manual. Also, the convex hull method divided the area into classified air pollution measurement stations. The Voronoi algorithm classifies regions using the distance value based on the center point of the cluster. Air pollution concentrations were not reflected in existing administrative districts, but the convex hull method and Voronoi algorithm can classify regions. Finally, in the convex hull method, the area without a measuring station is shaded, unlike the existing administrative area and Voronoi algorithm. Comprehensively, the Voronoi algorithm can classify the region by reflecting the air pollution concentration without the shaded area.
