ホウチン　テルヒサ   Teruhisa Hochin   寶珍　輝尚    所属   追手門学院大学  理工学部 情報工学科    職種   教授
言語種別	英語
発行・発表の年月	2018
形態種別	外国学術誌（First author）
査読	査読あり
標題	Quasi-optimality under pseudo F statistic in clustering data
執筆形態	共著・編著（代表編著を除く）
掲載誌名	International Journal of Engineering and Technology(UAE)
掲載区分	国外
巻・号・頁	7(2),pp.320-324
担当区分	筆頭著者,責任著者
著者・共著者	Teruhisa Hochin,Yoshihiro Hayashi,Hiroki Nomiya,Morshed U. Chowdhury
概要	Pseudo F statistic is often used in deciding the number of clusters. A set of clusters having the largest pseudo F value is selected as the optimum set of clusters. This paper proposes the quasi-optimum set of clusters, whose pseudo F value is larger than those of other sets of clusters, whose numbers are around the number of clusters in the quasi-optimum set. The before and behind (BB) difference of pseudo F values is proposed to find the number of clusters in the quasi-optimum set. The relative BB difference of pseudo F values, which is the ratio of the BB difference of pseudo F values to the pseudo F value itself, is also proposed to find it when the pseudo F value severely varies. This paper shows some examples to demonstrate that the BB differences of pseudo F values and the relative ones work well in finding quasi-optimum sets of clusters.
DOI	10.14419/ijet.v7i2.28.13205
ISSN	/2227-524X