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Attention mechanism, including global attention and local attention, plays a key role in neural machine translation (NMT). Global attention attends to all source words for word prediction. In comparison, local attention selectively looks at…

Computation and Language · Computer Science 2019-09-20 Kehai Chen , Rui Wang , Masao Utiyama , Eiichiro Sumita , Tiejun Zhao

Document-level machine translation manages to outperform sentence level models by a small margin, but have failed to be widely adopted. We argue that previous research did not make a clear use of the global context, and propose a new…

Computation and Language · Computer Science 2020-09-10 Zaixiang Zheng , Xiang Yue , Shujian Huang , Jiajun Chen , Alexandra Birch

Despite the progress made in sentence-level NMT, current systems still fall short at achieving fluent, good quality translation for a full document. Recent works in context-aware NMT consider only a few previous sentences as context and may…

Computation and Language · Computer Science 2019-05-27 Sameen Maruf , André F. T. Martins , Gholamreza Haffari

In this work, we present novel approaches to exploit sentential context for neural machine translation (NMT). Specifically, we first show that a shallow sentential context extracted from the top encoder layer only, can improve translation…

Computation and Language · Computer Science 2019-06-05 Xing Wang , Zhaopeng Tu , Longyue Wang , Shuming Shi

We investigate the use of extended context in attention-based neural machine translation. We base our experiments on translated movie subtitles and discuss the effect of increasing the segments beyond single translation units. We study the…

Computation and Language · Computer Science 2017-08-22 Jörg Tiedemann , Yves Scherrer

Despite the remarkable advancements in machine translation, the current sentence-level paradigm faces challenges when dealing with highly-contextual languages like Japanese. In this paper, we explore how context-awareness can improve the…

Computation and Language · Computer Science 2023-11-21 Sumire Honda , Patrick Fernandes , Chrysoula Zerva

In neural machine translation (NMT), generation of a target word depends on both source and target contexts. We find that source contexts have a direct impact on the adequacy of a translation while target contexts affect the fluency.…

Computation and Language · Computer Science 2017-03-09 Zhaopeng Tu , Yang Liu , Zhengdong Lu , Xiaohua Liu , Hang Li

For machine translation to tackle discourse phenomena, models must have access to extra-sentential linguistic context. There has been recent interest in modelling context in neural machine translation (NMT), but models have been principally…

Computation and Language · Computer Science 2018-04-23 Rachel Bawden , Rico Sennrich , Alexandra Birch , Barry Haddow

Standard neural machine translation (NMT) is on the assumption that the document-level context is independent. Most existing document-level NMT approaches are satisfied with a smattering sense of global document-level information, while…

Computation and Language · Computer Science 2021-08-25 Shu Jiang , Rui Wang , Zuchao Li , Masao Utiyama , Kehai Chen , Eiichiro Sumita , Hai Zhao , Bao-liang Lu

We present Neural Machine Translation (NMT) training using document-level metrics with batch-level documents. Previous sequence-objective approaches to NMT training focus exclusively on sentence-level metrics like sentence BLEU which do not…

Computation and Language · Computer Science 2020-05-05 Danielle Saunders , Felix Stahlberg , Bill Byrne

Neural machine translation (NMT) has been a new paradigm in machine translation, and the attention mechanism has become the dominant approach with the state-of-the-art records in many language pairs. While there are variants of the…

Computation and Language · Computer Science 2018-04-04 Heeyoul Choi , Kyunghyun Cho , Yoshua Bengio

In state-of-the-art Neural Machine Translation (NMT), an attention mechanism is used during decoding to enhance the translation. At every step, the decoder uses this mechanism to focus on different parts of the source sentence to gather the…

Computation and Language · Computer Science 2018-05-31 Jean-Benoit Delbrouck , Stéphane Dupont

Attention-based Neural Machine Translation (NMT) models suffer from attention deficiency issues as has been observed in recent research. We propose a novel mechanism to address some of these limitations and improve the NMT attention.…

Computation and Language · Computer Science 2016-08-10 Baskaran Sankaran , Haitao Mi , Yaser Al-Onaizan , Abe Ittycheriah

Standard neural machine translation (NMT) is on the assumption of document-level context independent. Most existing document-level NMT methods are satisfied with a smattering sense of brief document-level information, while this work…

Computation and Language · Computer Science 2021-10-13 Shu Jiang , Hai Zhao , Zuchao Li , Bao-Liang Lu

Monolingual data has been demonstrated to be helpful in improving the translation quality of neural machine translation (NMT). The current methods stay at the usage of word-level knowledge, such as generating synthetic parallel data or…

Computation and Language · Computer Science 2019-08-22 Rongxiang Weng , Heng Yu , Shujian Huang , Weihua Luo , Jiajun Chen

Recent work has shown that the encoder-decoder attention mechanisms in neural machine translation (NMT) are different from the word alignment in statistical machine translation. In this paper, we focus on analyzing encoder-decoder attention…

Computation and Language · Computer Science 2018-10-18 Gongbo Tang , Rico Sennrich , Joakim Nivre

Neural machine translation (NMT) has arguably achieved human level parity when trained and evaluated at the sentence-level. Document-level neural machine translation has received less attention and lags behind its sentence-level…

Computation and Language · Computer Science 2020-03-12 Elman Mansimov , Gábor Melis , Lei Yu

Neural machine translation (NMT) heavily relies on an attention network to produce a context vector for each target word prediction. In practice, we find that context vectors for different target words are quite similar to one another and…

Computation and Language · Computer Science 2019-11-14 Biao Zhang , Deyi Xiong , Jinsong Su

Conventional attention-based Neural Machine Translation (NMT) conducts dynamic alignment in generating the target sentence. By repeatedly reading the representation of source sentence, which keeps fixed after generated by the encoder…

Computation and Language · Computer Science 2016-10-18 Fandong Meng , Zhengdong Lu , Hang Li , Qun Liu

Most neural machine translation (NMT) models are based on the sequential encoder-decoder framework, which makes no use of syntactic information. In this paper, we improve this model by explicitly incorporating source-side syntactic trees.…

Computation and Language · Computer Science 2017-07-19 Huadong Chen , Shujian Huang , David Chiang , Jiajun Chen