@article{weko_231550_1,
   author	 = "Tomoaki,Mimoto and Takashi,Matsunaka and Hiroyuki,Yokoyama and Toru,Nakamura and Takamasa,Isohara",
   title	 = "Hierarchical Local Differential Privacy",
   journal	 = "情報処理学会論文誌",
   year 	 = "2023",
   volume	 = "64",
   number	 = "12",
   month	 = "dec"
}