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Multimodal Graph Networks for Compositional Generalization in Visual Question Answering
Raeid Saqur · Karthik Narasimhan

Wed Dec 09 09:00 AM -- 11:00 AM (PST) @ Poster Session 3 #834

Compositional generalization is a key challenge in grounding natural language to visual perception. While deep learning models have achieved great success in multimodal tasks like visual question answering, recent studies have shown that they fail to generalize to new inputs that are simply an unseen combination of those seen in the training distribution. In this paper, we propose to tackle this challenge by employing neural factor graphs to induce a tighter coupling between concepts in different modalities (e.g. images and text). Graph representations are inherently compositional in nature and allow us to capture entities, attributes and relations in a scalable manner. Our model first creates a multimodal graph, processes it with a graph neural network to induce a factor correspondence matrix, and then outputs a symbolic program to predict answers to questions. Empirically, our model achieves close to perfect scores on a caption truth prediction problem and state-of-the-art results on the recently introduced CLOSURE dataset, improving on the mean overall accuracy across seven compositional templates by 4.77\% over previous approaches.

Author Information

Raeid Saqur (University of Toronto, Vector Institute)

Raeid Saqur is a dual program graduate student with Department of Computer Science (DCS), and Electrical and Computer Engineering (ECE) at the University of Toronto. Concentration: Machine Learning in NLP and Vision.

Karthik Narasimhan (Princeton University)

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