节点文献
基于语境与语义模态的多任务情感原因对抽取
Multi-Task Emotion Cause Pair Extraction Based on Context and Semantic Modal
【摘要】 为了综合考虑更多模态信息,对语境和语义特征进行了建模,并将它们融合在一起以提取情感原因对。针对语境模态,采用了子句嵌入方法来获取情绪和原因的表示,并通过双因素注意力机制得到全局语境矩阵。同时,通过构建子句间语义的图神经网络,得到了局部语义特征。最后,通过主模态和辅助模态的匹配,得到了融合特征,以进行多任务预测,包括情感句、原因句和情感-原因对的抽取。实验结果表明,在抽取经典中文情感原因对数据时,相较于最佳基线系统,所提模型的F测度提高了2.2%。
【Abstract】 To consider more modal information, contextual and semantic features are modeled in detail, and emotion cause pair extraction is carried out on the fusion of two modal features.For the contextual modality, a clause embedding method is employed to obtain representations of emotions and causes, and dual-factor attention mechanism is utilized to derive a global contextual matrix. In the mean time, by constructing a graph neural network for inter-clause semantics, local semantic features are obtained. Finally, the fusion features are obtained by the main and auxiliary mode matching method for multi-task prediction, including emotional sentence, cause sentence and emotion-cause pair extraction task. Experimental results indicate that when extracting classic Chinese emotion-cause pairs, compared to the best baseline system, the F-measure has improved by 2.2%.
【Key words】 emotion cause pair extraction; global context; local semantics; modal matching;
- 【文献出处】 北京邮电大学学报 ,Journal of Beijing University of Posts and Telecommunications , 编辑部邮箱 ,2024年02期
- 【分类号】TP391.1
- 【下载频次】8