Hierarchical Question-Image Co-Attention for Visual Question Answering

A number of recent works have proposed attention models for Visual Question Answering (VQA) that generate spatial maps highlighting image regions relevant to answering the question. In this paper, we argue that in addition to modeling where to look or visual attention, it is equally important to model what words to listen to or question attention. We present a novel co-attention model for VQA that jointly reasons about image and question attention.