Many recent deep learning-based solutions have widely adopted the
attention-based mechanism in various tasks of the NLP discipline. However, the
inherent characteristics of deep learning models and the flexibility of the
attention mechanism increase the models' complexity, thus leading to challenges
in model explainability. In this paper, to address this challenge, we propose a
novel practical framework by utilizing a two-tier attention architecture to
decouple the complexity of explanation and the decision-making process. We
apply it in the context of a news article classification task. The experiments
on two large-scaled news corpora demonstrate that the proposed model can
achieve competitive performance with many state-of-the-art alternatives and
illustrate its appropriateness from an explainability perspective.

本文提出了一个新的深度学习框架，利用两级注意力体系结构来解决模型可解释性的问题，并在新闻文章分类任务中进行了实验，结果显示该模型在可解释性能力方面具有适当性并且与许多现有模型相比性能有竞争力。