Inducing Event Types and Roles in Reverse: Using Function to Discover Theme

Natalie Ahn


Abstract
With growing interest in automated event extraction, there is an increasing need to overcome the labor costs of hand-written event templates, entity lists, and annotated corpora. In the last few years, more inductive approaches have emerged, seeking to discover unknown event types and roles in raw text. The main recent efforts use probabilistic generative models, as in topic modeling, which are formally concise but do not always yield stable or easily interpretable results. We argue that event schema induction can benefit from greater structure in the process and in linguistic features that distinguish words’ functions and themes. To maximize our use of limited data, we reverse the typical schema induction steps and introduce new similarity measures, building an intuitive process for inducing the structure of unknown events.
Anthology ID:
W17-2710
Volume:
Proceedings of the Events and Stories in the News Workshop
Month:
August
Year:
2017
Address:
Vancouver, Canada
Editors:
Tommaso Caselli, Ben Miller, Marieke van Erp, Piek Vossen, Martha Palmer, Eduard Hovy, Teruko Mitamura, David Caswell
Venue:
EventStory
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
66–76
Language:
URL:
https://aclanthology.org/W17-2710
DOI:
10.18653/v1/W17-2710
Bibkey:
Cite (ACL):
Natalie Ahn. 2017. Inducing Event Types and Roles in Reverse: Using Function to Discover Theme. In Proceedings of the Events and Stories in the News Workshop, pages 66–76, Vancouver, Canada. Association for Computational Linguistics.
Cite (Informal):
Inducing Event Types and Roles in Reverse: Using Function to Discover Theme (Ahn, EventStory 2017)
Copy Citation:
PDF:
https://aclanthology.org/W17-2710.pdf
Data
Word Sense Disambiguation: a Unified Evaluation Framework and Empirical Comparison