Learning Word-Class Lattices for Definition and Hypernym Extraction

  title={Learning Word-Class Lattices for Definition and Hypernym Extraction},
  author={Roberto Navigli and Paola Velardi},
Definition extraction is the task of automatically identifying definitional sentences within texts. The task has proven useful in many research areas including ontology learning, relation extraction and question answering. However, current approaches – mostly focused on lexicosyntactic patterns – suffer from both low recall and precision, as definitional sentences occur in highly variable syntactic structures. In this paper, we propose WordClass Lattices (WCLs), a generalization of word… CONTINUE READING
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