@techreport{weko_72915_1,
   author	 = "Shota,Yasutake and Kohei,Hatano and Shuji,Kijima and Eiji,Takimoto and Masayuki,Takeda",
   title	 = "Online Prediction over Permutahedron",
   year 	 = "2011",
   institution	 = "Department of Informatics, Kyushu University., Department of Informatics, Kyushu University., Department of Informatics, Kyushu University., Department of Informatics, Kyushu University., Department of Informatics, Kyushu University.",
   number	 = "12",
   month	 = "feb"
}