Document Type

Conference Proceeding

Publication Title

NLP4PI 2022 - 2nd Workshop on NLP for Positive Impact, Proceedings of the Workshop

Abstract

Hateful memes are a growing menace on social media. While the image and its corresponding text in a meme are related, they do not necessarily convey the same meaning when viewed individually. Hence, detecting hateful memes requires careful consideration of both visual and textual information. Multimodal pretraining can be beneficial for this task because it effectively captures the relationship between the image and the text by representing them in a similar feature space. Furthermore, it is essential to model the interactions between the image and text features through intermediate fusion. Most existing methods either employ multimodal pre-training or intermediate fusion, but not both. In this work, we propose the HateCLIPper architecture, which explicitly models the cross-modal interactions between the image and text representations obtained using Contrastive Language-Image Pre-training (CLIP) encoders via a feature interaction matrix (FIM). A simple classifier based on the FIM representation is able to achieve state-of-the-art performance on the Hateful Memes Challenge (HMC) dataset with an AUROC of 85.8, which even surpasses the human performance of 82.65. Experiments on other meme datasets such as Propaganda Memes and TamilMemes also demonstrate the generalizability of the proposed approach. Finally, we analyze the interpretability of the FIM representation and show that cross-modal interactions can indeed facilitate the learning of meaningful concepts. The code for this work is available at https://github.com/gokulkarthik/hateclipper.

First Page

171

Last Page

183

Publication Date

12-7-2022

Keywords

Cross-modal interaction, Feature interactions, Interaction matrices, Matrix representation, Multi-modal, Pre-training, Social media, Textual information, Training features, Visual information

Comments

Archived with thanks to ACL Anthology

License: CC-BY 4.0

Uploaded 06 June 2023

Download

Share

COinS