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        <datestamp>2025-01-20T05:24:13Z</datestamp>
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          <dc:title>解析表現文法の指数時間性についての考察</dc:title>
          <dc:title xml:lang="en">On Time Exponentially of Parsing Expression Grammars</dc:title>
          <jpcoar:creator>
            <jpcoar:creatorName>山口, 大輔</jpcoar:creatorName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName>山口, 真弥</jpcoar:creatorName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName>千田, 忠賢</jpcoar:creatorName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName>倉光, 君郎</jpcoar:creatorName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="en">Daisuke, Yamaguchi</jpcoar:creatorName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="en">Shin'ya, Yamaguchi</jpcoar:creatorName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="en">Nariyoshi, Chida</jpcoar:creatorName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="en">Kimio, Kuramitsu</jpcoar:creatorName>
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          <jpcoar:subject subjectScheme="Other">[発表概要]</jpcoar:subject>
          <datacite:description descriptionType="Other">再帰下降構文解析は人気の実装方法であるが，バックトラッキングにより，最悪ケースにおいて指数時間を要することが知られている．現実のパーサでは，最悪ケースはほとんど発生しないが線形時間性を保証することは難しい．本研究では，再帰下降構文解析の形式モデルとしてPEGを用い，PEGの文法定義から線形時間性を判定する方法に取り組んだ．</datacite:description>
          <datacite:description descriptionType="Other">Parsing expression grammar is a modern formal language. Although PEG-based parsers require an exponential time in the worst case, it is known that most of the parsers can compute in linear time. However, the linearity or the exponentially is not guaranteed yet. In this study, we classify a class of PEG thet requires exponentioal time to analysis. Then we consider the judgement algorithm based on the classification.</datacite:description>
          <dc:publisher xml:lang="ja">情報処理学会</dc:publisher>
          <datacite:date dateType="Issued">2017-02-27</datacite:date>
          <dc:language>jpn</dc:language>
          <dc:type rdf:resource="http://purl.org/coar/resource_type/c_6501">journal article</dc:type>
          <jpcoar:identifier identifierType="URI">https://ipsj.ixsq.nii.ac.jp/records/177701</jpcoar:identifier>
          <jpcoar:sourceIdentifier identifierType="ISSN">1882-7802</jpcoar:sourceIdentifier>
          <jpcoar:sourceIdentifier identifierType="NCID">AA11464814</jpcoar:sourceIdentifier>
          <jpcoar:sourceTitle>情報処理学会論文誌プログラミング（PRO）</jpcoar:sourceTitle>
          <jpcoar:volume>10</jpcoar:volume>
          <jpcoar:issue>2</jpcoar:issue>
          <jpcoar:pageStart>2</jpcoar:pageStart>
          <jpcoar:pageEnd>2</jpcoar:pageEnd>
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            <datacite:date dateType="Available">2019-02-27</datacite:date>
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