@article{oai:repository.dl.itc.u-tokyo.ac.jp:00000409,
 author = {野畑, 周 and 関根, 聡 and 辻井, 潤一},
 issue = {1},
 journal = {自然言語処理},
 month = {Jan},
 note = {application/pdf},
 pages = {3--26},
 title = {日本語固有表現抽出の難易度を示す指標の提案と評価},
 volume = {10},
 year = {2003}
}