... obtain R and P, respectively • CEAF (Luo, 2005) It finds the best one-toone alignment between true and system entities Using true mentions and the φ3 similarity function, R and P are the same and correspond ... 2006), on the latter (Culotta et al., 2007; Bengtson and Roth, 2008; Denis and Baldridge, 2009), or on both (Finkel and Manning, 2008; Haghighi and Klein, 2009) Testing on both is needed given that ... relation is kept apart from the attributive relation, and it also contains gold-standard morphological, syntactic and semantic information Since the MUC and ACE corpora are annotated with only coreference...