TY - GEN
T1 - syrapropa at SemEval-2020 Task 11
T2 - 14th International Workshops on Semantic Evaluation, SemEval 2020
AU - Li, Jinfen
AU - Xiao, Lu
N1 - Publisher Copyright:
© 2020 14th International Workshops on Semantic Evaluation, SemEval 2020 - co-located 28th International Conference on Computational Linguistics, COLING 2020, Proceedings. All rights reserved.
PY - 2020
Y1 - 2020
N2 - This paper describes the BERT-based models proposed for two subtasks in SemEval-2020 Task 11: Detection of Propaganda Techniques in News Articles. We first build the model for Span Identification (SI) based on SpanBERT, and facilitate the detection by a deeper model and a sentence-level representation. We then develop a hybrid model for the Technique Classification (TC). The hybrid model is composed of three submodels including two BERT models with different training methods, and a feature-based Logistic Regression model. We endeavor to deal with imbalanced dataset by adjusting cost function. We are in the seventh place in SI subtask (0.4711 of F1-measure), and in the third place in TC subtask (0.6783 of F1-measure) on the development set.
AB - This paper describes the BERT-based models proposed for two subtasks in SemEval-2020 Task 11: Detection of Propaganda Techniques in News Articles. We first build the model for Span Identification (SI) based on SpanBERT, and facilitate the detection by a deeper model and a sentence-level representation. We then develop a hybrid model for the Technique Classification (TC). The hybrid model is composed of three submodels including two BERT models with different training methods, and a feature-based Logistic Regression model. We endeavor to deal with imbalanced dataset by adjusting cost function. We are in the seventh place in SI subtask (0.4711 of F1-measure), and in the third place in TC subtask (0.6783 of F1-measure) on the development set.
UR - http://www.scopus.com/inward/record.url?scp=85102479961&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85102479961&partnerID=8YFLogxK
U2 - 10.18653/v1/2020.semeval-1.237
DO - 10.18653/v1/2020.semeval-1.237
M3 - Conference contribution
AN - SCOPUS:85102479961
T3 - 14th International Workshops on Semantic Evaluation, SemEval 2020 - co-located 28th International Conference on Computational Linguistics, COLING 2020, Proceedings
SP - 1808
EP - 1816
BT - 14th International Workshops on Semantic Evaluation, SemEval 2020 - co-located 28th International Conference on Computational Linguistics, COLING 2020, Proceedings
A2 - Herbelot, Aurelie
A2 - Zhu, Xiaodan
A2 - Palmer, Alexis
A2 - Schneider, Nathan
A2 - May, Jonathan
A2 - Shutova, Ekaterina
PB - International Committee for Computational Linguistics
Y2 - 12 December 2020 through 13 December 2020
ER -