@techreport{oai:ipsj.ixsq.nii.ac.jp:00049171,
 author = {松岡, 正男 and 村田, 真樹 and 黒橋, 禎夫 and 長尾, 眞 and Masao, Matsuoka and Masaki, Murata and Sadao, Kurohashi and Makoto, Nagao},
 issue = {69(1995-NL-108)},
 month = {Jul},
 note = {テキストや談話を理解する上で，照応表現は非常に大きな役割を果たしている．本研究では，これまであまり研究されていなかったが，高品質の自然言語理解システムを実現するためにはその処理が必要不可欠である後方照応表現を取り扱った．具体的には，日本語の表層表現を手がかりとして後方照応表現の照応詞と先行詞の抽出を行った．抽出のためのルールは，まず緩やかなパターンで後方照応表現の候補文を取り出し，それらを詳細に調べることによって作成した．テストサンプルに対する実験の結果，後方照応表現の認定は適合率47．7％，再現率94．2％，先行詞の正解率は71．2％であった．, Anaphoric expressions play important roles in understanding text or discourse. Among anaphoric expressions, though cataphoric expressions are not processed so much before, it is necessary to process them in order to establish the high quality system of natural language processing. In this research, we extracted cataphoric expressions using surface expressions in Japanese sentences. We first extracted sentences which may contain cataphoric expressions by using general clues. Then we constructed a set of rules for extracting cataphoric expressions by checking those sentences. In recognition of cataphoric expressions in held-out texts, we obtained the correct recognition scores of 47.7% and the recall scores of 94.2%. Also we obtained the correct recognition scores of 71.2%, in retrieving antecedent of the recognized cataphoric expressions.},
 title = {表層表現を利用した日本語文章における後方照応表現の自動抽出},
 year = {1995}
}