@inproceedings{toshniwal-etal-2020-cross,
title = "A Cross-Task Analysis of Text Span Representations",
author = "Toshniwal, Shubham and
Shi, Haoyue and
Shi, Bowen and
Gao, Lingyu and
Livescu, Karen and
Gimpel, Kevin",
editor = "Gella, Spandana and
Welbl, Johannes and
Rei, Marek and
Petroni, Fabio and
Lewis, Patrick and
Strubell, Emma and
Seo, Minjoon and
Hajishirzi, Hannaneh",
booktitle = "Proceedings of the 5th Workshop on Representation Learning for NLP",
month = jul,
year = "2020",
address = "Online",
publisher = "Association for Computational Linguistics",
url = "https://aclanthology.org/2020.repl4nlp-1.20/",
doi = "10.18653/v1/2020.repl4nlp-1.20",
pages = "166--176",
abstract = "Many natural language processing (NLP) tasks involve reasoning with textual spans, including question answering, entity recognition, and coreference resolution. While extensive research has focused on functional architectures for representing words and sentences, there is less work on representing arbitrary spans of text within sentences. In this paper, we conduct a comprehensive empirical evaluation of six span representation methods using eight pretrained language representation models across six tasks, including two tasks that we introduce. We find that, although some simple span representations are fairly reliable across tasks, in general the optimal span representation varies by task, and can also vary within different facets of individual tasks. We also find that the choice of span representation has a bigger impact with a fixed pretrained encoder than with a fine-tuned encoder."
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%0 Conference Proceedings
%T A Cross-Task Analysis of Text Span Representations
%A Toshniwal, Shubham
%A Shi, Haoyue
%A Shi, Bowen
%A Gao, Lingyu
%A Livescu, Karen
%A Gimpel, Kevin
%Y Gella, Spandana
%Y Welbl, Johannes
%Y Rei, Marek
%Y Petroni, Fabio
%Y Lewis, Patrick
%Y Strubell, Emma
%Y Seo, Minjoon
%Y Hajishirzi, Hannaneh
%S Proceedings of the 5th Workshop on Representation Learning for NLP
%D 2020
%8 July
%I Association for Computational Linguistics
%C Online
%F toshniwal-etal-2020-cross
%X Many natural language processing (NLP) tasks involve reasoning with textual spans, including question answering, entity recognition, and coreference resolution. While extensive research has focused on functional architectures for representing words and sentences, there is less work on representing arbitrary spans of text within sentences. In this paper, we conduct a comprehensive empirical evaluation of six span representation methods using eight pretrained language representation models across six tasks, including two tasks that we introduce. We find that, although some simple span representations are fairly reliable across tasks, in general the optimal span representation varies by task, and can also vary within different facets of individual tasks. We also find that the choice of span representation has a bigger impact with a fixed pretrained encoder than with a fine-tuned encoder.
%R 10.18653/v1/2020.repl4nlp-1.20
%U https://aclanthology.org/2020.repl4nlp-1.20/
%U https://doi.org/10.18653/v1/2020.repl4nlp-1.20
%P 166-176
Markdown (Informal)
[A Cross-Task Analysis of Text Span Representations](https://aclanthology.org/2020.repl4nlp-1.20/) (Toshniwal et al., RepL4NLP 2020)
ACL
- Shubham Toshniwal, Haoyue Shi, Bowen Shi, Lingyu Gao, Karen Livescu, and Kevin Gimpel. 2020. A Cross-Task Analysis of Text Span Representations. In Proceedings of the 5th Workshop on Representation Learning for NLP, pages 166–176, Online. Association for Computational Linguistics.