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Non-autoregressive machine translation (NAT) systems predict a sequence of output tokens in parallel, achieving substantial improvements in generation speed compared to autoregressive models. Existing NAT models usually rely on the…

Computation and Language · Computer Science 2021-02-24 Chunting Zhou , Graham Neubig , Jiatao Gu

Non-autoregressive (NAR) neural machine translation is usually done via knowledge distillation from an autoregressive (AR) model. Under this framework, we leverage large monolingual corpora to improve the NAR model's performance, with the…

Computation and Language · Computer Science 2020-12-01 Jiawei Zhou , Phillip Keung

Existing sentence ordering approaches generally employ encoder-decoder frameworks with the pointer net to recover the coherence by recurrently predicting each sentence step-by-step. Such an autoregressive manner only leverages unilateral…

Computation and Language · Computer Science 2023-10-20 Yi Bin , Wenhao Shi , Bin Ji , Jipeng Zhang , Yujuan Ding , Yang Yang

Non-Autoregressive machine Translation (NAT) models have demonstrated significant inference speedup but suffer from inferior translation accuracy. The common practice to tackle the problem is transferring the Autoregressive machine…

Computation and Language · Computer Science 2021-05-18 Yongchang Hao , Shilin He , Wenxiang Jiao , Zhaopeng Tu , Michael Lyu , Xing Wang

Non-autoregressive neural machine translation (NART) models suffer from the multi-modality problem which causes translation inconsistency such as token repetition. Most recent approaches have attempted to solve this problem by implicitly…

Computation and Language · Computer Science 2021-09-15 Jongyoon Song , Sungwon Kim , Sungroh Yoon

Non-AutoRegressive (NAR) text generation models have drawn much attention because of their significantly faster decoding speed and good generation quality in machine translation. However, in a wider range of text generation tasks, existing…

Computation and Language · Computer Science 2023-04-25 Fei Huang , Pei Ke , Minlie Huang

In this work, we introduce a novel local autoregressive translation (LAT) mechanism into non-autoregressive translation (NAT) models so as to capture local dependencies among tar-get outputs. Specifically, for each target decoding position,…

Computation and Language · Computer Science 2020-11-13 Xiang Kong , Zhisong Zhang , Eduard Hovy

The field of image synthesis is currently flourishing due to the advancements in diffusion models. While diffusion models have been successful, their computational intensity has prompted the pursuit of more efficient alternatives. As a…

Computer Vision and Pattern Recognition · Computer Science 2024-06-11 Zanlin Ni , Yulin Wang , Renping Zhou , Jiayi Guo , Jinyi Hu , Zhiyuan Liu , Shiji Song , Yuan Yao , Gao Huang

In this work, we empirically confirm that non-autoregressive translation with an iterative refinement mechanism (IR-NAT) suffers from poor acceleration robustness because it is more sensitive to decoding batch size and computing device…

Computation and Language · Computer Science 2022-10-20 Qiang Wang , Xinhui Hu , Ming Chen

Non-autoregressive models are promising on various text generation tasks. Previous work hardly considers to explicitly model the positions of generated words. However, position modeling is an essential problem in non-autoregressive text…

Computation and Language · Computer Science 2019-12-02 Yu Bao , Hao Zhou , Jiangtao Feng , Mingxuan Wang , Shujian Huang , Jiajun Chen , Lei LI

Non-autoregressive translation (NAT) models are typically trained with the cross-entropy loss, which forces the model outputs to be aligned verbatim with the target sentence and will highly penalize small shifts in word positions. Latent…

Computation and Language · Computer Science 2022-10-11 Chenze Shao , Yang Feng

However, current autoregressive approaches suffer from high latency. In this paper, we focus on non-autoregressive translation (NAT) for this problem for its efficiency advantage. We identify that current constrained NAT models, which are…

Computation and Language · Computer Science 2022-10-27 Chun Zeng , Jiangjie Chen , Tianyi Zhuang , Rui Xu , Hao Yang , Ying Qin , Shimin Tao , Yanghua Xiao

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

Human motion prediction, which aims at predicting future human skeletons given the past ones, is a typical sequence-to-sequence problem. Therefore, extensive efforts have been continued on exploring different RNN-based encoder-decoder…

Computer Vision and Pattern Recognition · Computer Science 2021-02-24 Bin Li , Jian Tian , Zhongfei Zhang , Hailin Feng , Xi Li

Non-autoregressive generation (NAG) has recently attracted great attention due to its fast inference speed. However, the generation quality of existing NAG models still lags behind their autoregressive counterparts. In this work, we show…

Computation and Language · Computer Science 2021-02-17 Yixuan Su , Deng Cai , Yan Wang , David Vandyke , Simon Baker , Piji Li , Nigel Collier

In Transformer-based neural machine translation (NMT), the positional encoding mechanism helps the self-attention networks to learn the source representation with order dependency, which makes the Transformer-based NMT achieve…

Computation and Language · Computer Science 2020-04-09 Kehai Chen , Rui Wang , Masao Utiyama , Eiichiro Sumita

In real-world systems, scaling has been critical for improving the translation quality in autoregressive translation (AT), which however has not been well studied for non-autoregressive translation (NAT). In this work, we bridge the gap by…

Computation and Language · Computer Science 2023-06-05 Zhihao Wang , Longyue Wang , Jinsong Su , Junfeng Yao , Zhaopeng Tu

Simultaneous machine translation (SiMT) models are trained to strike a balance between latency and translation quality. However, training these models to achieve high quality while maintaining low latency often leads to a tendency for…

Computation and Language · Computer Science 2023-10-24 Zhengrui Ma , Shaolei Zhang , Shoutao Guo , Chenze Shao , Min Zhang , Yang Feng

Recent neural network models for image captioning usually employ an encoder-decoder architecture, where the decoder adopts a recursive sequence decoding way. However, such autoregressive decoding may result in sequential error accumulation…

Computer Vision and Pattern Recognition · Computer Science 2019-12-16 Zheng-cong Fei

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