{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1570009752085281152.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"NAID","@value":"110004029148"}}],"dc:title":[{"@language":"ja","@value":"SAIQA-大量文書に基づく質問応答システム-"},{"@language":"en","@value":"SAIQA : A Japanese QA System Based on a Large-Scale Corpus"}],"dc:language":"ja","description":[{"type":"abstract","notation":[{"@language":"ja","@value":"従来のTREC流の質問応答(Question Answering: QA)では, 質問に対する解答を含む250バイトまたは50バイトのパッセージを答えていた.しかしながら, 質問応答技術の最も興味深い点は, 質問に対して解答を含む文書やパッセージを返すのではなく, 解答そのもの(exact answer)を判定し, 答えることができる点にある.そこで, 本稿では, 大量の文書集合に基づいて質問に答える日本語質問応答システムSAIQAについて述べるとともに, 2000問の質問文について評価を行なった結果を示す.評価には, 解答の根拠として, 文書全体を与えた場合と, 質問に適応した要約(Question-Biased Text Summarization: QBTS)を与えた場合の評価も含む.評価の結果, 5位以内の正解率は約50%であり, 正解の場合には, 要約の約87%が根拠として正しいことが明らかになった."},{"@language":"en","@value":"Conventional TREC-style Question-Answering (QA) involves extracting passages (250 bytes or 50 bytes) that contain answers to a question. The most attractive feature of QA is that it can provide exact answers to the question, rather than a list of ranked passages, paragraphs, or documants. This paper describes a Japanese QA system SAIQA which finds exact answers to a question from a large-scale Japanese text corpus and an experimental evaluation on exact answer extraction. The experiments include evaluations of answers to 2000 questions with justification by article summarization. The results show that around 50% of correct answers can be found from the top of five answers and that over 87% of short summaries can be used for answer justification (or evidence) instead of full texts."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1580009752085281155","@type":"Researcher","foaf:name":[{"@language":"ja","@value":"佐々木裕"},{"@language":"en","@value":"Sasaki Y."}],"jpcoar:affiliationName":[{"@language":"ja","@value":"日本電信電話株式会社NTTコミュニケーション科学基礎研究所"},{"@language":"en","@value":"NTT Communication Science Laboratories, NTT 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秀樹"},{"@language":"en","@value":"Isozaki H."}],"jpcoar:affiliationName":[{"@language":"ja","@value":"日本電信電話株式会社NTTコミュニケーション科学基礎研究所"},{"@language":"en","@value":"NTT Communication Science Laboratories, NTT 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