Experiments on the ACE 2003 corpus showed that their method improved the overall performance by 2.8, 2.2 and 4.5 to 54.5, 64.0 and 60.8 in F1-measure on the NWIRE, NPAPER and BNEWS domains, respectively.
he did not look into the contribution of anaphoricity determi-nation on coreference resolution of different NP types.