The dominant approach to sequence generation is to produce a sequence in some predefined order, e.g. left to right. In contrast, we propose a more general model that can generate the output sequence by inserting tokens in any arbitrary order. Our model learns decoding order as a result of its training procedure. Our experiments show that this model is superior to fixed order models on a number of sequence generation tasks, such as Machine Translation, Image-to-LaTeX and Image Captioning.
@article{arxiv.1911.00176,
title = {Sequence Modeling with Unconstrained Generation Order},
author = {Dmitrii Emelianenko and Elena Voita and Pavel Serdyukov},
journal= {arXiv preprint arXiv:1911.00176},
year = {2019}
}