Bridging the semantic gap between image and question is an important step to improve the accuracy of the Visual Question Answering (VQA) task. However, most of the existing VQA methods focus on attention mechanisms or visual relations for reasoning the answer, while the features at different semantic levels are not fully utilized. In this paper, we present a new reasoning framework to fill the gap between visual features and semantic clues in the VQA task. Our method first extracts the features and predicates from the image and question. We then propose a new reasoning framework to effectively jointly learn these features and predicates in a coarse-to-fine manner. The intensively experimental results on three large-scale VQA datasets show that our proposed approach achieves superior accuracy comparing with other state-of-the-art methods. Furthermore, our reasoning framework also provides an explainable way to understand the decision of the deep neural network when predicting the answer.

本文提出了一种新的推理框架来填补VQA任务中视觉特征和语义线索之间的语义鸿沟，实现了特征和谓词的有效联合学习，并在三个大规模数据集上实现了其他最先进方法无法比拟的准确度，同时还提供了一种可解释的方式来理解深度神经网络在预测答案时的决策。

基于粗到细的视觉问答推理