Using the shared-private paradigm and adversarial training has significantly improved the performances of multi-domain text classification (MDTC) models. However, there are two issues for the existing methods. First, instances from the multiple domains are not sufficient for domain-invariant feature extraction. Second, aligning on the marginal distributions may lead to fatal mismatching. In this paper, we propose a mixup regularized adversarial network (MRAN) to address these two issues. More specifically, the domain and category mixup regularizations are introduced to enrich the intrinsic features in the shared latent space and enforce consistent predictions in-between training instances such that the learned features can be more domain-invariant and discriminative. We conduct experiments on two benchmarks: The Amazon review dataset and the FDU-MTL dataset. Our approach on these two datasets yields average accuracies of 87.64\% and 89.0\% respectively, outperforming all relevant baselines.

本研究提出了一个名为MRAN的混合正则化对抗网络，通过引入领域和类别的混合正则化来增强共享潜在空间内在特征，并在训练实例之间强制执行一致的预测，以使学习到的特征更具领域内部不变性和区分性，实验结果表明对于Amazon评论数据集和FDU-MTL数据集分别获得了87.64％和89.0％的平均准确率，优于所有相关基线模型。

多领域文本分类的Mixup正则化对抗网络