著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Shibing Zhou and Zhenyuan Xu,A novel internal validity index based on the cluster centre and the nearest neighbour cluster,Applied Soft Computing,1568-4946,Elsevier BV,2018-10,71,,78-88,https://cir.nii.ac.jp/crid/1360857672711780096,https://doi.org/10.1016/j.asoc.2018.06.033