Defoiling Foiled Image Captions

Pranava Swaroop Madhyastha, Josiah Wang, Lucia Specia


Abstract
We address the task of detecting foiled image captions, i.e. identifying whether a caption contains a word that has been deliberately replaced by a semantically similar word, thus rendering it inaccurate with respect to the image being described. Solving this problem should in principle require a fine-grained understanding of images to detect subtle perturbations in captions. In such contexts, encoding sufficiently descriptive image information becomes a key challenge. In this paper, we demonstrate that it is possible to solve this task using simple, interpretable yet powerful representations based on explicit object information over multilayer perceptron models. Our models achieve state-of-the-art performance on a recently published dataset, with scores exceeding those achieved by humans on the task. We also measure the upper-bound performance of our models using gold standard annotations. Our study and analysis reveals that the simpler model performs well even without image information, suggesting that the dataset contains strong linguistic bias.
Anthology ID:
N18-2069
Volume:
Proceedings of the 2018 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, Volume 2 (Short Papers)
Month:
June
Year:
2018
Address:
New Orleans, Louisiana
Editors:
Marilyn Walker, Heng Ji, Amanda Stent
Venue:
NAACL
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
433–438
Language:
URL:
https://aclanthology.org/N18-2069
DOI:
10.18653/v1/N18-2069
Bibkey:
Cite (ACL):
Pranava Swaroop Madhyastha, Josiah Wang, and Lucia Specia. 2018. Defoiling Foiled Image Captions. In Proceedings of the 2018 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, Volume 2 (Short Papers), pages 433–438, New Orleans, Louisiana. Association for Computational Linguistics.
Cite (Informal):
Defoiling Foiled Image Captions (Madhyastha et al., NAACL 2018)
Copy Citation:
PDF:
https://aclanthology.org/N18-2069.pdf
Video:
 https://aclanthology.org/N18-2069.mp4
Code
 sheffieldnlp/foildataset
Data
MS COCO