@article{weko_12531_1,
   author	 = "永田,昌明",
   title	 = "未知語の確率モデルと単語の出現頻度の期待値に基づくテキストからの語彙獲得",
   journal	 = "情報処理学会論文誌",
   year 	 = "1999",
   volume	 = "40",
   number	 = "9",
   pages	 = "3373--3386",
   month	 = "sep"
}