End-to-End Information Extraction without Token-Level Supervision

Rasmus Berg Palm, Dirk Hovy, Florian Laws, Ole Winther


Abstract
Most state-of-the-art information extraction approaches rely on token-level labels to find the areas of interest in text. Unfortunately, these labels are time-consuming and costly to create, and consequently, not available for many real-life IE tasks. To make matters worse, token-level labels are usually not the desired output, but just an intermediary step. End-to-end (E2E) models, which take raw text as input and produce the desired output directly, need not depend on token-level labels. We propose an E2E model based on pointer networks, which can be trained directly on pairs of raw input and output text. We evaluate our model on the ATIS data set, MIT restaurant corpus and the MIT movie corpus and compare to neural baselines that do use token-level labels. We achieve competitive results, within a few percentage points of the baselines, showing the feasibility of E2E information extraction without the need for token-level labels. This opens up new possibilities, as for many tasks currently addressed by human extractors, raw input and output data are available, but not token-level labels.
Anthology ID:
W17-4606
Volume:
Proceedings of the Workshop on Speech-Centric Natural Language Processing
Month:
September
Year:
2017
Address:
Copenhagen, Denmark
Venue:
WS
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
48–52
Language:
URL:
https://aclanthology.org/W17-4606
DOI:
10.18653/v1/W17-4606
Bibkey:
Cite (ACL):
Rasmus Berg Palm, Dirk Hovy, Florian Laws, and Ole Winther. 2017. End-to-End Information Extraction without Token-Level Supervision. In Proceedings of the Workshop on Speech-Centric Natural Language Processing, pages 48–52, Copenhagen, Denmark. Association for Computational Linguistics.
Cite (Informal):
End-to-End Information Extraction without Token-Level Supervision (Palm et al., 2017)
Copy Citation:
PDF:
https://aclanthology.org/W17-4606.pdf
Code
 rasmusbergpalm/e2e-ie-release