Automatic Extraction of Clause Relationships from a Treebank

  • Authors:
  • Oldřich Krůza;Vladislav Kuboň

  • Affiliations:
  • Institute of Formal and Applied Linguistics, Charles University in Prague, Prague, Czech Republic;Institute of Formal and Applied Linguistics, Charles University in Prague, Prague, Czech Republic

  • Venue:
  • CICLing '09 Proceedings of the 10th International Conference on Computational Linguistics and Intelligent Text Processing
  • Year:
  • 2009

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Abstract

The paper concentrates on deriving non-obvious information about clause structure of complex sentences from the Prague Dependency Treebank. Individual clauses and their mutual relationship are not explicitly annotated in the treebank, therefore it was necessary to develop an automatic method transforming the original annotation concentrating on the syntactic role of individual word forms into a scheme describing the relationship between individual clauses. The task is complicated by a certain degree of inconsistency in original annotation with regard to clauses and their structure. The paper describes the method of deriving clause-related information from the existing annotation and its evaluation.