Modality and Negation in Event Extraction

09/20/2021
by   Sander Bijl de Vroe, et al.
1

Language provides speakers with a rich system of modality for expressing thoughts about events, without being committed to their actual occurrence. Modality is commonly used in the political news domain, where both actual and possible courses of events are discussed. NLP systems struggle with these semantic phenomena, often incorrectly extracting events which did not happen, which can lead to issues in downstream applications. We present an open-domain, lexicon-based event extraction system that captures various types of modality. This information is valuable for Question Answering, Knowledge Graph construction and Fact-checking tasks, and our evaluation shows that the system is sufficiently strong to be used in downstream applications.

READ FULL TEXT

page 1

page 2

page 3

page 4

research
04/04/2019

MMED: A Multi-domain and Multi-modality Event Dataset

In this work, we construct and release a multi-domain and multi-modality...
research
06/15/2021

The Possible, the Plausible, and the Desirable: Event-Based Modality Detection for Language Processing

Modality is the linguistic ability to describe events with added informa...
research
11/02/2022

Title2Event: Benchmarking Open Event Extraction with a Large-scale Chinese Title Dataset

Event extraction (EE) is crucial to downstream tasks such as new aggrega...
research
05/01/2022

Crude Oil-related Events Extraction and Processing: A Transfer Learning Approach

One of the challenges in event extraction via traditional supervised lea...
research
08/17/2022

NECE: Narrative Event Chain Extraction Toolkit

NECE is an event-based text analysis toolkit built for narrative documen...
research
09/22/2021

Salience-Aware Event Chain Modeling for Narrative Understanding

Storytelling, whether via fables, news reports, documentaries, or memoir...
research
10/30/2014

Towards Learning Object Affordance Priors from Technical Texts

Everyday activities performed by artificial assistants can potentially b...

Please sign up or login with your details

Forgot password? Click here to reset