Focal Visual-Text Attention for Visual Question Answering
This addresses real-life question answering on personal photo or video collections, offering an incremental improvement over single-image methods.
The paper tackles the problem of visual question answering on multimedia collections by introducing the Focal Visual-Text Attention network (FVTA), which dynamically focuses on relevant media and time sequences to answer questions and provide justifications, achieving state-of-the-art performance on MemexQA and competitive results on MovieQA.
Recent insights on language and vision with neural networks have been successfully applied to simple single-image visual question answering. However, to tackle real-life question answering problems on multimedia collections such as personal photos, we have to look at whole collections with sequences of photos or videos. When answering questions from a large collection, a natural problem is to identify snippets to support the answer. In this paper, we describe a novel neural network called Focal Visual-Text Attention network (FVTA) for collective reasoning in visual question answering, where both visual and text sequence information such as images and text metadata are presented. FVTA introduces an end-to-end approach that makes use of a hierarchical process to dynamically determine what media and what time to focus on in the sequential data to answer the question. FVTA can not only answer the questions well but also provides the justifications which the system results are based upon to get the answers. FVTA achieves state-of-the-art performance on the MemexQA dataset and competitive results on the MovieQA dataset.