Survey: Weighted Extended Top-Down Tree Transducers Part III -Composition
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  • 作者:Aurélie Lagoutte (18)
    Andreas Maletti (19)
  • 关键词:weighted tree transducer ; top ; down tree transducer ; composition ; deletion ; copying
  • 刊名:Lecture Notes in Computer Science
  • 出版年:2011
  • 出版时间:2011
  • 年:2011
  • 卷:7020
  • 期:1
  • 页码:309-346
  • 全文大小:463KB
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  • 作者单位:Aurélie Lagoutte (18)
    Andreas Maletti (19)

    18. Département Informatique, école normale supérieure de Cachan, 61, avenue du Président Wilson, 94235, Cachan cedex, France
    19. Institute for Natural Language Processing, Universit?t Stuttgart, Azenbergstra?e?12, 70174, Stuttgart, Germany
文摘
In this survey (functional) compositions of weighted tree transformations computable by weighted extended top-down tree transducers are investigated. The existing results in the literature are explained and illustrated. It is argued, why certain compositions are not possible in the general case, and 3?informed conjectures provide an insight into potentially 3?new composition results that extend and complement the existing results. In particular, if all were true, then the beautiful symmetry in the composition results for weighted top-down and bottom-up tree transducers would be recovered.

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