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Riloff, Ellen M. | Unsupervised learning of contextual role knowledge for coreference resolution | We present a coreference resolver called BABAR that uses contextual role knowledge to evaluate possible antecedents for an anaphor. BABAR uses information extraction patterns to identify contextual roles and creates four contextual role knowledge sources using unsupervised learning. These knowledge ... | Coreference resolution; Coreference resolver; BABAR; Contextual role knowledge; Unsupervised learning | 2004 |