In order to further demonstrate the benefits of supervised attention for police killing detection, we consider two more baseline models when the model attentions at the word level are excluded from "H-LSTM+SemAtt" and "H-LSTM+SynAtt", resulting in the models "Mean+SemAtt" and "Mean+SynAtt".
in such models, the sentence representation vector u i,j for the sentence s i,j would not be obtained via the attention-based weighted sum in Equation 3.