Collaborative Reasoning on Multi-Modal Semantic Graphs for Video-Grounded Dialogue Generation

• URL: http://arxiv.org/abs/2210.12460v1
• Date: Sat, 22 Oct 2022 14:45:29 GMT
• Title: Collaborative Reasoning on Multi-Modal Semantic Graphs for Video-Grounded Dialogue Generation
• Authors: Xueliang Zhao, Yuxuan Wang, Chongyang Tao, Chenshuo Wang and Dongyan Zhao
• Abstract summary: We study video-grounded dialogue generation, where a response is generated based on the dialogue context and the associated video. The primary challenges of this task lie in (1) the difficulty of integrating video data into pre-trained language models (PLMs) We propose a multi-agent reinforcement learning method to collaboratively perform reasoning on different modalities.
• Score: 53.87485260058957
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: We study video-grounded dialogue generation, where a response is generated based on the dialogue context and the associated video. The primary challenges of this task lie in (1) the difficulty of integrating video data into pre-trained language models (PLMs) which presents obstacles to exploiting the power of large-scale pre-training; and (2) the necessity of taking into account the complementarity of various modalities throughout the reasoning process. Although having made remarkable progress in video-grounded dialogue generation, existing methods still fall short when it comes to integrating with PLMs in a way that allows information from different modalities to complement each other. To alleviate these issues, we first propose extracting pertinent information from videos and turning it into reasoning paths that are acceptable to PLMs. Additionally, we propose a multi-agent reinforcement learning method to collaboratively perform reasoning on different modalities (i.e., video and dialogue context). Empirical experiment results on two public datasets indicate that the proposed model can significantly outperform state-of-the-art models by large margins on both automatic and human evaluations.

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