@inproceedings{goyal-durrett-2020-neural,
title = "Neural Syntactic Preordering for Controlled Paraphrase Generation",
author = "Goyal, Tanya and
Durrett, Greg",
booktitle = "Proceedings of the 58th Annual Meeting of the Association for Computational Linguistics",
month = jul,
year = "2020",
address = "Online",
publisher = "Association for Computational Linguistics",
url = "https://aclanthology.org/2020.acl-main.22",
doi = "10.18653/v1/2020.acl-main.22",
pages = "238--252",
abstract = "Paraphrasing natural language sentences is a multifaceted process: it might involve replacing individual words or short phrases, local rearrangement of content, or high-level restructuring like topicalization or passivization. Past approaches struggle to cover this space of paraphrase possibilities in an interpretable manner. Our work, inspired by pre-ordering literature in machine translation, uses syntactic transformations to softly {``}reorder{''} the source sentence and guide our neural paraphrasing model. First, given an input sentence, we derive a set of feasible syntactic rearrangements using an encoder-decoder model. This model operates over a partially lexical, partially syntactic view of the sentence and can reorder big chunks. Next, we use each proposed rearrangement to produce a sequence of position embeddings, which encourages our final encoder-decoder paraphrase model to attend to the source words in a particular order. Our evaluation, both automatic and human, shows that the proposed system retains the quality of the baseline approaches while giving a substantial increase in the diversity of the generated paraphrases.",
}
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%0 Conference Proceedings
%T Neural Syntactic Preordering for Controlled Paraphrase Generation
%A Goyal, Tanya
%A Durrett, Greg
%S Proceedings of the 58th Annual Meeting of the Association for Computational Linguistics
%D 2020
%8 July
%I Association for Computational Linguistics
%C Online
%F goyal-durrett-2020-neural
%X Paraphrasing natural language sentences is a multifaceted process: it might involve replacing individual words or short phrases, local rearrangement of content, or high-level restructuring like topicalization or passivization. Past approaches struggle to cover this space of paraphrase possibilities in an interpretable manner. Our work, inspired by pre-ordering literature in machine translation, uses syntactic transformations to softly “reorder” the source sentence and guide our neural paraphrasing model. First, given an input sentence, we derive a set of feasible syntactic rearrangements using an encoder-decoder model. This model operates over a partially lexical, partially syntactic view of the sentence and can reorder big chunks. Next, we use each proposed rearrangement to produce a sequence of position embeddings, which encourages our final encoder-decoder paraphrase model to attend to the source words in a particular order. Our evaluation, both automatic and human, shows that the proposed system retains the quality of the baseline approaches while giving a substantial increase in the diversity of the generated paraphrases.
%R 10.18653/v1/2020.acl-main.22
%U https://aclanthology.org/2020.acl-main.22
%U https://doi.org/10.18653/v1/2020.acl-main.22
%P 238-252
Markdown (Informal)
[Neural Syntactic Preordering for Controlled Paraphrase Generation](https://aclanthology.org/2020.acl-main.22) (Goyal & Durrett, ACL 2020)
ACL