Delving Deeper into Cross-lingual Visual Question Answering

• URL: http://arxiv.org/abs/2202.07630v2
• Date: Thu, 8 Jun 2023 18:33:28 GMT
• Title: Delving Deeper into Cross-lingual Visual Question Answering
• Authors: Chen Liu, Jonas Pfeiffer, Anna Korhonen, Ivan Vuli\'c, Iryna Gurevych
• Abstract summary: We show that simple modifications to the standard training setup can substantially reduce the transfer gap to monolingual English performance. We analyze cross-lingual VQA across different question types of varying complexity for different multilingual multimodal Transformers.
• Score: 115.16614806717341
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Visual question answering (VQA) is one of the crucial vision-and-language tasks. Yet, existing VQA research has mostly focused on the English language, due to a lack of suitable evaluation resources. Previous work on cross-lingual VQA has reported poor zero-shot transfer performance of current multilingual multimodal Transformers with large gaps to monolingual performance, without any deeper analysis. In this work, we delve deeper into the different aspects of cross-lingual VQA, aiming to understand the impact of 1) modeling methods and choices, including architecture, inductive bias, fine-tuning; 2) learning biases: including question types and modality biases in cross-lingual setups. The key results of our analysis are: 1) We show that simple modifications to the standard training setup can substantially reduce the transfer gap to monolingual English performance, yielding +10 accuracy points over existing methods. 2) We analyze cross-lingual VQA across different question types of varying complexity for different multilingual multimodal Transformers, and identify question types that are the most difficult to improve on. 3) We provide an analysis of modality biases present in training data and models, revealing why zero-shot performance gaps remain for certain question types and languages.

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