Semantic Role Labeling Based on Highway-BiLSTM-CRF Model
|© 2021 by IJCTT Journal|
|Year of Publication : 2021|
|Authors : Xinxin Li, Xiangzhong Pu|
|DOI : 10.14445/22312803/IJCTT-V69I10P103|
How to Cite?
Xinxin Li, Xiangzhong Pu, "Semantic Role Labeling Based on Highway-BiLSTM-CRF Model," International Journal of Computer Trends and Technology, vol. 69, no. 10, pp. 23-27, 2021. Crossref, https://doi.org/10.14445/22312803/IJCTT-V69I10P103
Semantic Role Labeling is an important task in natural language processing. At present, the main approach of Semantic role labeling is based on BiLSTM. However, the BiLSTM network may have training difficulties and vanishing gradient problems with increased network depth. This paper proposes a Highway-BiLSTM-CRF model to solve this problem, which connects BiLSTM layers with highway networks. In the input layer, dependency relations, the distance between predicate and arguments are added to improve the experimental effect. Finally, the CRF layer is used to obtain the optimal tagging sequence. Experimental results of Chinese PropBank show that Chinese semantic role labeling achieves the best performance when BiLSTM depth is 8 layers, in which F1 value reaches 80.15%.
Semantic role labeling, BiLSTM-CRF, Highway network, The dependency relation.
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