Enhancing Visual Question Answering through Ranking-Based Hybrid Training and Multimodal Fusion
This work addresses the challenge of complex question answering in VQA for AI systems, but it is incremental as it builds on existing methods like Faster R-CNN and BERT with a hybrid training strategy.
The paper tackled the problem of improving Visual Question Answering (VQA) by addressing limitations in multimodal information integration, resulting in the Rank VQA model that significantly outperforms state-of-the-art models on datasets like VQA v2.0 and COCO-QA in terms of accuracy and Mean Reciprocal Rank (MRR).
Visual Question Answering (VQA) is a challenging task that requires systems to provide accurate answers to questions based on image content. Current VQA models struggle with complex questions due to limitations in capturing and integrating multimodal information effectively. To address these challenges, we propose the Rank VQA model, which leverages a ranking-inspired hybrid training strategy to enhance VQA performance. The Rank VQA model integrates high-quality visual features extracted using the Faster R-CNN model and rich semantic text features obtained from a pre-trained BERT model. These features are fused through a sophisticated multimodal fusion technique employing multi-head self-attention mechanisms. Additionally, a ranking learning module is incorporated to optimize the relative ranking of answers, thus improving answer accuracy. The hybrid training strategy combines classification and ranking losses, enhancing the model's generalization ability and robustness across diverse datasets. Experimental results demonstrate the effectiveness of the Rank VQA model. Our model significantly outperforms existing state-of-the-art models on standard VQA datasets, including VQA v2.0 and COCO-QA, in terms of both accuracy and Mean Reciprocal Rank (MRR). The superior performance of Rank VQA is evident in its ability to handle complex questions that require understanding nuanced details and making sophisticated inferences from the image and text. This work highlights the effectiveness of a ranking-based hybrid training strategy in improving VQA performance and lays the groundwork for further research in multimodal learning methods.