Advances in telecommunications technologies such as the online voice and video calling, smart phones, and micro messaging service have not only made life easier for millions of users, they also strengthened their social ties and improved their psychological well-being. On the other hand,...

Exploratory spatial data analysis continues to be an important area of research. The use and application of clustering methods for the analysis of spatially referenced data is beginning to show some promise. However, a variety of clustering methods does exist. It is essential that a better...