7 (denoted by the black-dashed line in Figure 2) as: h e = g(W e h zu + b e ).
we performed the models in different scenarios as follows: (i) scratch training where models trained from scratch using 10% (scr10), 30% (scr30), and 100% (scr100) amount of in-domain data; and (ii) domain adaptation training where models pre-trained from scratch using all source domain data, then fine-tuned on the target domain using only 10% amount of the target data.