Nguyen Van Minh¹ and Le Hoang Son², ¹Hanoi University of Natural Resources and Environment, Vietnam, ²Vietnam National University, Vietnam

Fuzzy Geographically Weighted Clustering (FGWC) is considered as a suitable tool for the analysis of geo-demographic data that assists the provision and planning of products and services to local people. Context variables were attached to FGWC in order to accelerate the computing speed of the algorithm and to focus the results on the domain of interests. Nonetheless, the determination of exact, crisp values of the context variable is a hard task. In this paper, we propose two novel methods using fuzzy approaches for that determination. A numerical example is given to illustrate the uses of the proposed methods.

Context Variables; Fuzzy Clustering; Fuzzy Geographically Weighted Clustering; Type-2 Fuzzy Sets.