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Previous work on document-level NMT usually focuses on limited contexts because of degraded performance on larger contexts. In this paper, we investigate on using large contexts with three main contributions: (1) Different from previous…

Computation and Language · Computer Science 2019-11-11 Liangyou Li , Xin Jiang , Qun Liu

Neural Machine Translation (NMT) can be improved by including document-level contextual information. For this purpose, we propose a hierarchical attention model to capture the context in a structured and dynamic manner. The model is…

Computation and Language · Computer Science 2018-10-02 Lesly Miculicich , Dhananjay Ram , Nikolaos Pappas , James Henderson

Document-level context has received lots of attention for compensating neural machine translation (NMT) of isolated sentences. However, recent advances in document-level NMT focus on sophisticated integration of the context, explaining its…

Computation and Language · Computer Science 2019-10-02 Yunsu Kim , Duc Thanh Tran , Hermann Ney

Standard machine translation systems process sentences in isolation and hence ignore extra-sentential information, even though extended context can both prevent mistakes in ambiguous cases and improve translation coherence. We introduce a…

Computation and Language · Computer Science 2018-05-28 Elena Voita , Pavel Serdyukov , Rico Sennrich , Ivan Titov

Neural machine translation (NMT) systems are usually trained on a large amount of bilingual sentence pairs and translate one sentence at a time, ignoring inter-sentence information. This may make the translation of a sentence ambiguous or…

Computation and Language · Computer Science 2018-06-13 Shaohui Kuang , Deyi Xiong

Machine translation (MT) models used in industries with constantly changing topics, such as translation or news agencies, need to adapt to new data to maintain their performance over time. Our aim is to teach a pre-trained MT model to…

Computation and Language · Computer Science 2021-04-01 Farid Arthaud , Rachel Bawden , Alexandra Birch

We propose a process for investigating the extent to which sentence representations arising from neural machine translation (NMT) systems encode distinct semantic phenomena. We use these representations as features to train a natural…

Computation and Language · Computer Science 2018-05-08 Adam Poliak , Yonatan Belinkov , James Glass , Benjamin Van Durme

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

Neural chat translation aims to translate bilingual conversational text, which has a broad application in international exchanges and cooperation. Despite the impressive performance of sentence-level and context-aware Neural Machine…

Computation and Language · Computer Science 2021-07-26 Yunlong Liang , Fandong Meng , Yufeng Chen , Jinan Xu , Jie Zhou

Unsupervised cross-lingual pretraining has achieved strong results in neural machine translation (NMT), by drastically reducing the need for large parallel data. Most approaches adapt masked-language modeling (MLM) to sequence-to-sequence…

Computation and Language · Computer Science 2021-06-11 Christos Baziotis , Ivan Titov , Alexandra Birch , Barry Haddow

In order to capture rich language phenomena, neural machine translation models have to use a large vocabulary size, which requires high computing time and large memory usage. In this paper, we alleviate this issue by introducing a…

Computation and Language · Computer Science 2016-08-02 Haitao Mi , Zhiguo Wang , Abe Ittycheriah

Existing document-level neural machine translation (NMT) models have sufficiently explored different context settings to provide guidance for target generation. However, little attention is paid to inaugurate more diverse context for…

Computation and Language · Computer Science 2022-01-06 Xu Zhang , Jian Yang , Haoyang Huang , Shuming Ma , Dongdong Zhang , Jinlong Li , Furu Wei

It has been previously noted that neural machine translation (NMT) is very sensitive to domain shift. In this paper, we argue that this is a dual effect of the highly lexicalized nature of NMT, resulting in failure for sentences with large…

Computation and Language · Computer Science 2019-06-04 Junjie Hu , Mengzhou Xia , Graham Neubig , Jaime Carbonell

Homographs, words with different meanings but the same surface form, have long caused difficulty for machine translation systems, as it is difficult to select the correct translation based on the context. However, with the advent of neural…

Computation and Language · Computer Science 2018-03-29 Frederick Liu , Han Lu , Graham Neubig

Standard context-aware neural machine translation (NMT) typically relies on parallel document-level data, exploiting both source and target contexts. Concatenation-based approaches in particular, still a strong baseline for document-level…

Computation and Language · Computer Science 2024-02-12 Harritxu Gete , Thierry Etchegoyhen

The effectiveness of Neural Machine Translation (NMT) models largely depends on the vocabulary used at training; small vocabularies can lead to out-of-vocabulary problems -- large ones, to memory issues. Subword (SW) tokenization has been…

Computation and Language · Computer Science 2023-03-02 J. Pourmostafa Roshan Sharami , D. Shterionov , P. Spronck

Pronouns are a long-standing challenge in machine translation. We present a study of the performance of a range of rule-based, statistical and neural MT systems on pronoun translation based on an extensive manual evaluation using the…

Computation and Language · Computer Science 2018-08-31 Christian Hardmeier , Liane Guillou

Contextualized representation models such as ELMo (Peters et al., 2018a) and BERT (Devlin et al., 2018) have recently achieved state-of-the-art results on a diverse array of downstream NLP tasks. Building on recent token-level probing work,…

Syntax has been proven to be remarkably effective in neural machine translation (NMT). Previous models obtained syntax information from syntactic parsing tools and integrated it into NMT models to improve translation performance. In this…

Computation and Language · Computer Science 2024-06-18 Yang Liu , Yuexian Hou

Unsupervised Neural Machine Translation (UNMT) focuses on improving NMT results under the assumption there is no human translated parallel data, yet little work has been done so far in highlighting its advantages compared to supervised…

Computation and Language · Computer Science 2023-12-21 Isidora Chara Tourni , Derry Wijaya