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融合双向依存自注意力机制的神经机器翻译 被引量:6
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作者 李治瑾 赖华 +1 位作者 文永华 高盛祥 《计算机应用》 CSCD 北大核心 2022年第12期3679-3685,共7页
针对神经机器翻译中资源稀缺的问题,提出了一种基于双向依存自注意力机制(Bi-Dependency)的依存句法知识融合方法。首先,利用外部解析器对源句子解析得到依存解析数据;然后,将依存解析数据转化为父词位置向量和子词权重矩阵;最后,将依... 针对神经机器翻译中资源稀缺的问题,提出了一种基于双向依存自注意力机制(Bi-Dependency)的依存句法知识融合方法。首先,利用外部解析器对源句子解析得到依存解析数据;然后,将依存解析数据转化为父词位置向量和子词权重矩阵;最后,将依存知识融合到Transformer编码器的多头注意力机制上。利用Bi-Dependency,翻译模型可以同时对父词到子词、子词到父词两个方向的依存信息进行关注。双向翻译的实验结果表明,与Transformer模型相比,在富资源情况下,所提方法在汉-泰翻译上的BLEU值分别提升了1.07和0.86,在汉-英翻译上的BLEU值分别提升了0.79和0.68;在低资源情况下,所提方法在汉-泰翻译上的BLEU值分别提升了0.51和1.06,在汉-英翻译上的BLEU值分别提升了1.04和0.40。可见Bi-Dependency为模型提供了更丰富的依存信息,能够有效提升翻译性能。 展开更多
关键词 神经机器翻译 双向依存注意力 多头注意力 父词
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“We Were Not at School Today”: First-Person Pronouns and Discursive Construction of Identities by Emerging Middle-Class Chinese Parents 被引量:1
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作者 Yanmei Han Jianping Chen 《Chinese Journal of Applied Linguistics》 2019年第3期285-306,400,共23页
In the process of China’s dynamic social changes over the past decades, the young-parent identity construction of an emerging middle class and the resulting changes of social-cultural values in this context have attr... In the process of China’s dynamic social changes over the past decades, the young-parent identity construction of an emerging middle class and the resulting changes of social-cultural values in this context have attracted the attention of academic research in recent years. With the focus on the discursive construction of parent identity, this study examines the utilization of first-person pronouns in three different interactional contexts, namely, parent-teacher interaction, parent-parent interaction, and parent-child interaction. The study further explores the patterns of alignment between the parents and their children, parents and teachers of their children, and peer parents during the process of identity construction, followed by a discussion of the implication that young, emerging middleclass Chinese parents fundamentally shape themselves as "concerned" and "involved" parents and the change of values between collectivity and agency. The study not only demonstrates the dynamic and pluralistic nature of parent identity but also deepens our understanding of the indexical roles of first-person pronouns in the discursive construction of emerging middle-class Chinese parent identity and its relationship with the recent social-cultural changes in the Chinese context. 展开更多
关键词 collectivity agency first-person pronouns parent identity construction emerging middle-class
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