Progress in Information Extraction

نویسندگان

  • Ralph M. Weischedel
  • Sean Boisen
  • Daniel M. Bikel
  • Robert J. Bobrow
  • Michael Crystal
  • William Ferguson
  • Allan Wechsler
چکیده

In MUC-5 and MUC-6 the output of information extraction has been a multi-level object-oriented data structure. Although appropriate for an object-oriented data base, the structures frequently were not straightforwardly mappable from linguistic structures. This was one of the reasons that prior to MUC-6, semantic inferencing was added to PLUM's discourse processor. The discourse processor, when invoked on a sentence, first adds all semantic predicates associated with a sentence to the semantic database. Reference resolution is performed, and the relevant semantic objects are unified in the database as a result. At this point, a set of inference rules are applied, and any that succeed will add more predicates to the database.

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تاریخ انتشار 1996