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We study Latent Recurrent Transformer (LRT), a lightweight augmentation of autoregressive transformers that reuses a high-level source-layer hidden state from the previous token as recurrent memory for the next token. Because this source…

Non-Autoregressive Neural Machine Translation (NAT) achieves significant decoding speedup through generating target words independently and simultaneously. However, in the context of non-autoregressive translation, the word-level…

Computation and Language · Computer Science 2019-11-22 Chenze Shao , Jinchao Zhang , Yang Feng , Fandong Meng , Jie Zhou

Despite low latency, non-autoregressive machine translation (NAT) suffers severe performance deterioration due to the naive independence assumption. This assumption is further strengthened by cross-entropy loss, which encourages a strict…

Computation and Language · Computer Science 2022-10-21 Yafu Li , Leyang Cui , Yongjing Yin , Yue Zhang

This paper tackles several challenges that arise when integrating Automatic Speech Recognition (ASR) and Machine Translation (MT) for real-time, on-device streaming speech translation. Although state-of-the-art ASR systems based on…

Computation and Language · Computer Science 2025-08-20 Zeeshan Ahmed , Frank Seide , Niko Moritz , Ju Lin , Ruiming Xie , Simone Merello , Zhe Liu , Christian Fuegen

Non-autoregressive (NAR) modeling has gained significant interest in speech processing since these models achieve dramatically lower inference time than autoregressive (AR) models while also achieving good transcription accuracy. Since NAR…

Computation and Language · Computer Science 2024-02-21 Siddhant Arora , George Saon , Shinji Watanabe , Brian Kingsbury

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

Recently, non-autoregressive (NAT) models predict outputs in parallel, achieving substantial improvements in generation speed compared to autoregressive (AT) models. While performing worse on raw data, most NAT models are trained as student…

Computation and Language · Computer Science 2021-12-23 Jiaxin Guo , Minghan Wang , Daimeng Wei , Hengchao Shang , Yuxia Wang , Zongyao Li , Zhengzhe Yu , Zhanglin Wu , Yimeng Chen , Chang Su , Min Zhang , Lizhi Lei , shimin tao , Hao Yang

We present FourierNAT, a novel non-autoregressive Transformer (NAT) architecture that employs Fourier-based mixing in the decoder to generate output sequences in parallel. While traditional NAT approaches often face challenges with…

Machine Learning · Computer Science 2025-04-17 Andrew Kiruluta , Eric Lundy , Andreas Lemos

Non-autoregressive Transformers (NATs) are recently applied in direct speech-to-speech translation systems, which convert speech across different languages without intermediate text data. Although NATs generate high-quality outputs and…

Computation and Language · Computer Science 2024-10-23 Weiting Tan , Jingyu Zhang , Lingfeng Shen , Daniel Khashabi , Philipp Koehn

Non-autoregressive neural machine translation (NAT) models suffer from the multi-modality problem that there may exist multiple possible translations of a source sentence, so the reference sentence may be inappropriate for the training when…

Computation and Language · Computer Science 2022-12-01 Chenze Shao , Jinchao Zhang , Jie Zhou , Yang Feng

While pre-trained language models have achieved great success on various natural language understanding tasks, how to effectively leverage them into non-autoregressive generation tasks remains a challenge. To solve this problem, we present…

Computation and Language · Computer Science 2021-10-22 Ting Jiang , Shaohan Huang , Zihan Zhang , Deqing Wang , Fuzhen Zhuang , Furu Wei , Haizhen Huang , Liangjie Zhang , Qi Zhang

Recent advances have made non-autoregressive (NAT) translation comparable to autoregressive methods (AT). However, their evaluation using BLEU has been shown to weakly correlate with human annotations. Limited research compares…

Computation and Language · Computer Science 2024-05-22 Yafu Li , Huajian Zhang , Jianhao Yan , Yongjing Yin , Yue Zhang

Non-autoregressive neural machine translation (NAT) usually employs sequence-level knowledge distillation using autoregressive neural machine translation (AT) as its teacher model. However, a NAT model often outputs shorter sentences than…

Computation and Language · Computer Science 2021-07-30 Yui Oka , Katsuhito Sudoh , Satoshi Nakamura

Non-autoregressive translation (NAT) models remove the dependence on previous target tokens and generate all target tokens in parallel, resulting in significant inference speedup but at the cost of inferior translation accuracy compared to…

Machine Learning · Computer Science 2019-11-25 Junliang Guo , Xu Tan , Linli Xu , Tao Qin , Enhong Chen , Tie-Yan Liu

We propose a first streaming accent conversion (AC) model that transforms non-native speech into a native-like accent while preserving speaker identity, prosody and improving pronunciation. Our approach enables stream processing by…

Computation and Language · Computer Science 2025-06-23 Tuan-Nam Nguyen , Ngoc-Quan Pham , Seymanur Akti , Alexander Waibel

With the rapid advancement of Neural Machine Translation (NMT), enhancing translation efficiency and quality has become a focal point of research. Despite the commendable performance of general models such as the Transformer in various…

Computation and Language · Computer Science 2024-02-26 Jingpu Yang , Zehua Han , Mengyu Xiang , Helin Wang , Yuxiao Huang , Miao Fang

Autoregressive decoding is the only part of sequence-to-sequence models that prevents them from massive parallelization at inference time. Non-autoregressive models enable the decoder to generate all output symbols independently in…

Computation and Language · Computer Science 2018-11-13 Jindřich Libovický , Jindřich Helcl

Benefiting from the sequence-level knowledge distillation, the Non-Autoregressive Transformer (NAT) achieves great success in neural machine translation tasks. However, existing knowledge distillation has side effects, such as propagating…

Computation and Language · Computer Science 2023-08-07 Min Liu , Yu Bao , Chengqi Zhao , Shujian Huang

Streaming generation models are utilized across fields, with the Transducer architecture being popular in industrial applications. However, its input-synchronous decoding mechanism presents challenges in tasks requiring non-monotonic…

Computation and Language · Computer Science 2025-05-29 Zhengrui Ma , Yang Feng , Min Zhang

Non-autoregressive machine translation (NAT) models have lower translation quality than autoregressive translation (AT) models because NAT decoders do not depend on previous target tokens in the decoder input. We propose a novel and general…

Computation and Language · Computer Science 2023-08-03 Jiaao Zhan , Qian Chen , Boxing Chen , Wen Wang , Yu Bai , Yang Gao