@techreport{weko_66947_1,
   author	 = "北村,祐貴 and 狩野,均",
   title	 = "事前処理にk-means法を利用したスパムフィルタの開発",
   year 	 = "2009",
   institution	 = "筑波大学, 筑波大学",
   number	 = "12",
   month	 = "dec"
}