29,393 research outputs found
Automatic Fact-guided Sentence Modification
Online encyclopediae like Wikipedia contain large amounts of text that need
frequent corrections and updates. The new information may contradict existing
content in encyclopediae. In this paper, we focus on rewriting such dynamically
changing articles. This is a challenging constrained generation task, as the
output must be consistent with the new information and fit into the rest of the
existing document. To this end, we propose a two-step solution: (1) We identify
and remove the contradicting components in a target text for a given claim,
using a neutralizing stance model; (2) We expand the remaining text to be
consistent with the given claim, using a novel two-encoder sequence-to-sequence
model with copy attention. Applied to a Wikipedia fact update dataset, our
method successfully generates updated sentences for new claims, achieving the
highest SARI score. Furthermore, we demonstrate that generating synthetic data
through such rewritten sentences can successfully augment the FEVER
fact-checking training dataset, leading to a relative error reduction of 13%.Comment: AAAI 202
Medical WordNet: A new methodology for the construction and validation of information resources for consumer health
A consumer health information system must be able to comprehend both expert and non-expert medical vocabulary and to map between the two. We describe an ongoing
project to create a new lexical database called Medical WordNet (MWN), consisting of
medically relevant terms used by and intelligible to non-expert subjects and supplemented by a corpus of natural-language sentences that is designed to provide
medically validated contexts for MWN terms. The corpus derives primarily from online health information sources targeted to consumers, and involves two sub-corpora, called Medical FactNet (MFN) and Medical BeliefNet (MBN), respectively. The former consists of statements accredited as true on the basis of a rigorous process of validation, the latter of statements which non-experts believe to be true. We summarize the MWN / MFN / MBN project, and describe some of its applications
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