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Multilingual neural machine translation (NMT) has recently been investigated from different aspects (e.g., pivot translation, zero-shot translation, fine-tuning, or training from scratch) and in different settings (e.g., rich resource and…

Computation and Language · Computer Science 2019-12-30 Xu Tan , Yichong Leng , Jiale Chen , Yi Ren , Tao Qin , Tie-Yan Liu

We present effective pre-training strategies for neural machine translation (NMT) using parallel corpora involving a pivot language, i.e., source-pivot and pivot-target, leading to a significant improvement in source-target translation. We…

Computation and Language · Computer Science 2019-09-23 Yunsu Kim , Petre Petrov , Pavel Petrushkov , Shahram Khadivi , Hermann Ney

Popular Neural Machine Translation model training uses strategies like backtranslation to improve BLEU scores, requiring large amounts of additional data and training. We introduce a class of conditional generative-discriminative hybrid…

Computation and Language · Computer Science 2020-10-16 Prathyusha Jwalapuram , Shafiq Joty , Youlin Shen

This paper proposes a novel multilingual multistage fine-tuning approach for low-resource neural machine translation (NMT), taking a challenging Japanese--Russian pair for benchmarking. Although there are many solutions for low-resource…

Computation and Language · Computer Science 2019-07-09 Aizhan Imankulova , Raj Dabre , Atsushi Fujita , Kenji Imamura

In this paper, we address the task of improving pair-wise machine translation for specific low resource Indian languages. Multilingual NMT models have demonstrated a reasonable amount of effectiveness on resource-poor languages. In this…

Computation and Language · Computer Science 2020-12-11 Kartheek Akella , Sai Himal Allu , Sridhar Suresh Ragupathi , Aman Singhal , Zeeshan Khan , Vinay P. Namboodiri , C V Jawahar

Neural Machine Translation (NMT) for low-resource languages is still a challenging task in front of NLP researchers. In this work, we deploy a standard data augmentation methodology by back-translation to a new language translation…

Computation and Language · Computer Science 2024-06-11 Kung Yin Hong , Lifeng Han , Riza Batista-Navarro , Goran Nenadic

Recent studies have shown that reinforcement learning (RL) is an effective approach for improving the performance of neural machine translation (NMT) system. However, due to its instability, successfully RL training is challenging,…

Machine Learning · Computer Science 2018-08-28 Lijun Wu , Fei Tian , Tao Qin , Jianhuang Lai , Tie-Yan Liu

An effective method to improve extremely low-resource neural machine translation is multilingual training, which can be improved by leveraging monolingual data to create synthetic bilingual corpora using the back-translation method. This…

Computation and Language · Computer Science 2021-05-28 Maali Tars , Andre Tättar , Mark Fišel

When the amount of parallel sentences available to train a neural machine translation is scarce, a common practice is to generate new synthetic training samples from them. A number of approaches have been proposed to produce synthetic…

Computation and Language · Computer Science 2024-01-30 Víctor M. Sánchez-Cartagena , Miquel Esplà-Gomis , Juan Antonio Pérez-Ortiz , Felipe Sánchez-Martínez

Without real bilingual corpus available, unsupervised Neural Machine Translation (NMT) typically requires pseudo parallel data generated with the back-translation method for the model training. However, due to weak supervision, the pseudo…

Computation and Language · Computer Science 2019-01-15 Shuo Ren , Zhirui Zhang , Shujie Liu , Ming Zhou , Shuai Ma

Neural Machine Translation (NMT) systems rely on large amounts of parallel data. This is a major challenge for low-resource languages. Building on recent work on unsupervised and semi-supervised methods, we present an approach that combines…

Computation and Language · Computer Science 2018-05-29 Lierni Sestorain , Massimiliano Ciaramita , Christian Buck , Thomas Hofmann

Unsupervised neural machine translation(NMT) is associated with noise and errors in synthetic data when executing vanilla back-translations. Here, we explicitly exploits language model(LM) to drive construction of an unsupervised NMT…

Computation and Language · Computer Science 2019-11-12 Wei Zhang , Youyuan Lin , Ruoran Ren , Xiaodong Wang , Zhenshuang Liang , Zhen Huang

While monolingual data has been shown to be useful in improving bilingual neural machine translation (NMT), effectively and efficiently leveraging monolingual data for Multilingual NMT (MNMT) systems is a less explored area. In this work,…

Computation and Language · Computer Science 2020-10-07 Yiren Wang , ChengXiang Zhai , Hany Hassan Awadalla

Neural machine translation~(NMT) is ineffective for zero-resource languages. Recent works exploring the possibility of unsupervised neural machine translation (UNMT) with only monolingual data can achieve promising results. However, there…

Computation and Language · Computer Science 2021-04-02 Mingxuan Wang , Hongxiao Bai , Hai Zhao , Lei Li

Over the last few years two promising research directions in low-resource neural machine translation (NMT) have emerged. The first focuses on utilizing high-resource languages to improve the quality of low-resource languages via…

Computation and Language · Computer Science 2020-05-12 Aditya Siddhant , Ankur Bapna , Yuan Cao , Orhan Firat , Mia Chen , Sneha Kudugunta , Naveen Arivazhagan , Yonghui Wu

Back translation (BT) is one of the most significant technologies in NMT research fields. Existing attempts on BT share a common characteristic: they employ either beam search or random sampling to generate synthetic data with a backward…

Computation and Language · Computer Science 2023-12-25 Jiahao Xu , Yubin Ruan , Wei Bi , Guoping Huang , Shuming Shi , Lihui Chen , Lemao Liu

Self-training has proven effective for improving NMT performance by augmenting model training with synthetic parallel data. The common practice is to construct synthetic data based on a randomly sampled subset of large-scale monolingual…

Computation and Language · Computer Science 2021-06-03 Wenxiang Jiao , Xing Wang , Zhaopeng Tu , Shuming Shi , Michael R. Lyu , Irwin King

Pivot-based neural machine translation (NMT) is commonly used in low-resource setups, especially for translation between non-English language pairs. It benefits from using high resource source-pivot and pivot-target language pairs and an…

Computation and Language · Computer Science 2021-09-28 Evgeniia Tokarchuk , Jan Rosendahl , Weiyue Wang , Pavel Petrushkov , Tomer Lancewicki , Shahram Khadivi , Hermann Ney

Low-resource machine translation (MT) has gained increasing attention as parallel data from low-resource language communities is collected, but many approaches for improving low-resource MT remain underexplored. We investigate a…

Computation and Language · Computer Science 2026-03-19 Ahmed Attia , Alham Fikri Aji

While end-to-end neural machine translation (NMT) has made remarkable progress recently, NMT systems only rely on parallel corpora for parameter estimation. Since parallel corpora are usually limited in quantity, quality, and coverage,…

Computation and Language · Computer Science 2016-12-13 Yong Cheng , Wei Xu , Zhongjun He , Wei He , Hua Wu , Maosong Sun , Yang Liu