Aspect Category Detection Based on Attention Mechanism and Bi-Directional LSTM Chenchao Zhou, Qun Chen, Zhanhuai Li, Bo Zhao, Yongjun Xu and Yang Qin JNWPU, 37 3 (2019) 558-564 Published online: 20 September 2019 DOI: 10.1051/jnwpu/20193730558