Probabilistic framework for solving Visual Dialog

Badri Patro, Anupriy ., Vinay Namboodiri

Research output: Contribution to journalArticle

Abstract

In this paper, we propose a probabilistic framework for solving the task of ‘Visual Dialog’. Solving this task requires reasoning and understanding of visual modality, language modality, and common sense knowledge to answer. Various architectures have been proposed to solve this task by variants of multi-modal deep learning techniques that combine visual and language representations. However, we believe that it is crucial to understand and analyze the sources of uncertainty for solving this task. Our approach allows for estimating uncertainty and also aids a diverse generation of answers. The proposed approach is obtained through a probabilistic representation module that provides us with representations for image, question and conversation history, a module that ensures that diverse latent representations for candidate answers are obtained given the probabilistic representations and an uncertainty representation module that chooses the appropriate answer that minimizes uncertainty. We thoroughly evaluate the model with a detailed ablation analysis, comparison with state of the art and visualization of the uncertainty that aids in the understanding of the method. Using the proposed probabilistic framework, we thus obtain an improved visual dialog system that is also more explainable.
Original languageEnglish
Article number107586
JournalPattern Recognition
Early online date15 Aug 2020
DOIs
Publication statusE-pub ahead of print - 15 Aug 2020

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