“…Several other methods have been offered to improve classification and clustering precision, using graphs and relationship neighborhoods. Graphs such as Gabriel's graph are geometric methods to examine the direct and indirect relationships among the points (Varma et al, 2016, İnkaya, 2015a, İnkaya, 2015b, Güngör & Özmen, 2017. As shown in Fig.1, to examine the relationship between two points, Gabriel's graph determines the distance between the two points of x , x as the circle diameter.…”