@techreport{weko_98406_1,
   author	 = "Kazuaki,Kishida",
   title	 = "Empirical Comparison of External Evaluation Measures for Document Clustering by Using Synthetic Data",
   year 	 = "2014",
   institution	 = "School of Library and Information Science, Keio University",
   number	 = "1",
   month	 = "jan"
}