Synchronous bidirectional inference for neural sequence generation
Synchronous bidirectional inference for neural sequence generation
复制标题
用于神经序列生成的同步双向推理
DOI:
10.1016/j.artint.2020.103234
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发表时间:
2019-02
影响因子:
14.4
通讯作者:
Zong Chengqing
中科院分区:
文献类型:
--
作者:
Zhang Jiajun;Zhou Long;Zhao Yang;Zong Chengqing
In sequence to sequence generation tasks (e.g. machine translation and abstractive summarization), inference is generally performed in a left-to-right manner to produce the result token by token. The neural approaches, such as LSTM and self-attention networks, are now able to make full use of all the predicted history hypotheses from left side during inference, but cannot meanwhile access any future (right side) information and usually generate unbalanced outputs (e.g. left parts are much more accurate than right ones in Chinese-English translation). In this work, we propose a synchronous bidirectional inference model to generate outputs using both left-to-right and right-to-left decoding simultaneously and interactively. First, we introduce a novel beam search algorithm that facilitates synchronous bidirectional decoding. Then, we present the core approach which enables left-to-right and right-to-left decoding to interact with each other, so as to utilize both the history and future predictions simultaneously during inference. We apply the proposed model to both LSTM and self-attention networks. Furthermore, we propose a novel fine-tuning based parameter optimization algorithm in addition to the simple two-pass strategy. The extensive experiments on machine translation and abstractive summarization demonstrate that our synchronous bidirectional inference model can achieve remarkable improvements over the strong baselines.
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DOI:
--
发表时间:
2019-01
期刊:
ArXiv
影响因子:
--
作者:
Felix Wu;Angela Fan;Alexei Baevski;Yann Dauphin;Michael Auli
通讯作者:
Felix Wu;Angela Fan;Alexei Baevski;Yann Dauphin;Michael Auli
DOI:
10.1162/tacl_a_00011
发表时间:
2017-11
期刊:
TACL2018
影响因子:
--
作者:
Zaixiang Zheng;Hao Zhou;Shujian Huang;Lili Mou;Xinyu Dai;Jiajun Chen;Zhaopeng Tu
通讯作者:
Zhaopeng Tu
DOI:
10.3115/1220575.1220634
发表时间:
2005-10
期刊:
--
影响因子:
--
作者:
Yoshimasa Tsuruoka;Junichi Tsujii
通讯作者:
Yoshimasa Tsuruoka;Junichi Tsujii
DOI:
--
发表时间:
2017-01
期刊:
ArXiv
影响因子:
--
作者:
Jiwei Li;Will Monroe;Dan Jurafsky
通讯作者:
Jiwei Li;Will Monroe;Dan Jurafsky
DOI:
10.3115/1072228.1072278
发表时间:
2002-08
期刊:
--
影响因子:
--
作者:
Taro Watanabe;E. Sumita
通讯作者:
Taro Watanabe;E. Sumita