3) Our findings are more consistent with <cite>most previous work</cite> on configurations such as usefulness of character information (Lample et al., 2016; Ma and Hovy, 2016) , optimizer (<cite>Chiu and Nichols, 2016</cite>; Lample et al., 2016; Ma and Hovy, 2016) and tag scheme (Ratinov and Roth, 2009; Dai et al., 2015) .