arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.01239cs.CVcs.LG
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基于先验类语义的可视化问答

Visual Question Answering with Prior Class Semantics

The University of Adelaide(阿德莱德大学)

Violetta Shevchenko, Damien Teney, Anthony Dick, Anton van den Hengel

摘要:

我们提出了一种新的机制,嵌入先验知识的视觉问答模型。任务的开集性质与训练固定分类器的普遍方法不一致。我们将展示如何利用有关候选答案的语义的额外信息。我们扩展的答案预测过程中的一个回归目标的语义空间,在其中,我们项目的候选人的答案使用先验知识来自词嵌入。我们对GQA数据集的学习表示进行了广泛的研究,揭示了答案空间中嵌入之间的关系中捕获了重要的语义信息。我们的方法在一系列问题类型上提高了一致性和准确性。在训练过程中看不到的新答案的实验表明,该方法具有开集预测的潜力。

英文摘要:

We present a novel mechanism to embed prior knowledge in a model for visual question answering. The open-set nature of the task is at odds with the ubiquitous approach of training of a fixed classifier. We show how to exploit additional information pertaining to the semantics of candidate answers. We extend the answer prediction process with a regression objective in a semantic space, in which we project candidate answers using prior knowledge derived from word embeddings. We perform an extensive study of learned representations with the GQA dataset, revealing that important semantic information is captured in the relations between embeddings in the answer space. Our method brings improvements in consistency and accuracy over a range of question types. Experiments with novel answers, unseen during training, indicate the method's potential for open-set prediction.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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