Based on the results on the development set, λ detection = 0.1 works best from {0.05, 0.1, 0.5, 1.0}. Model is trained with ADAM optimizer (Kingma and Ba, 2015) and converges in around 200K updates, which is faster than that of<cite> Lee et al. (2017)</cite> . In particular, compared with<cite> Lee et al. (2017)</cite> , our improvement mainly results from the precision scores.