Therefore , we preprocess Ontonote-5 .0 to derive mention heads using Collins head rules ( Collins , 1999 ) with gold constituency parsing information and gold named entity information .
headdriven statistical models for natural language parsing
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The ACE-2004 dataset is annotated with both mention and mention heads , while the OntoNotes5 .0 dataset only has mention annotations . Therefore , we preprocess Ontonote-5 .0 to derive mention heads using Collins head rules ( Collins , 1999 ) with gold constituency parsing information and gold named entity information . The parsing information9 is only needed to generate training data for the mention head candidate generator and named entities are directly set as heads .
Therefore , we preprocess Ontonote-5 .0 to derive mention heads using Collins head rules ( @@CITATION ) with gold constituency parsing information and gold named entity information .