Unfortunately, it is difficult to compare directly to the results of both systems, since they reported results on portions of ACE and CoNLL datasets using gold mentions.
our approach provides independent evidence for the benefit of NEL, and joint modeling in particular, since it outperforms the state-of-the-art Stanford sieve system (winner of the CoNLL 2011 shared task (Pradhan et al., 2011)) and other recent comparable approaches on benchmark datasets.