For the former, we follow prior methods (Xue et al., 2003;Pei et al., 2014) Figure 3, a multi-layer perceptron (MLP) is employed to derive a five-character window vector D C from single-character vector rep- For the latter, we follow recent work (Chen et al., 2015b;Zhang et al., 2016b), using a bidirectional LSTM to encode input character sequence.
3 the bi-directional LSTM ] of the next incoming character c 0 is used to represent the coming characters [c 0 , c 1 , ...] given a state.