Visual Grounding Strategies for Text-Only Natural Language Processing

Damien Sileo


Abstract
Visual grounding is a promising path toward more robust and accurate Natural Language Processing (NLP) models. Many multimodal extensions of BERT (e.g., VideoBERT, LXMERT, VL-BERT) allow a joint modeling of texts and images that lead to state-of-the-art results on multimodal tasks such as Visual Question Answering. Here, we leverage multimodal modeling for purely textual tasks (language modeling and classification) with the expectation that the multimodal pretraining provides a grounding that can improve text processing accuracy. We propose possible strategies in this respect. A first type of strategy, referred to as transferred grounding consists in applying multimodal models to text-only tasks using a placeholder to replace image input. The second one, which we call associative grounding, harnesses image retrieval to match texts with related images during both pretraining and text-only downstream tasks. We draw further distinctions into both strategies and then compare them according to their impact on language modeling and commonsense-related downstream tasks, showing improvement over text-only baselines.
Anthology ID:
2021.lantern-1.2
Volume:
Proceedings of the Third Workshop on Beyond Vision and LANguage: inTEgrating Real-world kNowledge (LANTERN)
Month:
April
Year:
2021
Address:
Kyiv, Ukraine
Editors:
Marius Mosbach, Michael A. Hedderich, Sandro Pezzelle, Aditya Mogadala, Dietrich Klakow, Marie-Francine Moens, Zeynep Akata
Venue:
LANTERN
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
19–29
Language:
URL:
https://aclanthology.org/2021.lantern-1.2
DOI:
Bibkey:
Cite (ACL):
Damien Sileo. 2021. Visual Grounding Strategies for Text-Only Natural Language Processing. In Proceedings of the Third Workshop on Beyond Vision and LANguage: inTEgrating Real-world kNowledge (LANTERN), pages 19–29, Kyiv, Ukraine. Association for Computational Linguistics.
Cite (Informal):
Visual Grounding Strategies for Text-Only Natural Language Processing (Sileo, LANTERN 2021)
Copy Citation:
PDF:
https://aclanthology.org/2021.lantern-1.2.pdf
Data
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