MTAG: Modal-Temporal Attention Graph for Unaligned Human Multimodal Language Sequences

• URL: http://arxiv.org/abs/2010.11985v2
• Date: Wed, 28 Apr 2021 18:44:01 GMT
• Title: MTAG: Modal-Temporal Attention Graph for Unaligned Human Multimodal Language Sequences
• Authors: Jianing Yang, Yongxin Wang, Ruitao Yi, Yuying Zhu, Azaan Rehman, Amir Zadeh, Soujanya Poria, Louis-Philippe Morency
• Abstract summary: MTAG is an interpretable graph-based neural model that provides a suitable framework for analyzing multimodal sequential data. By learning to focus only on the important interactions within the graph, MTAG achieves state-of-the-art performance on multimodal sentiment analysis and emotion recognition benchmarks.
• Score: 46.146331814606
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Human communication is multimodal in nature; it is through multiple modalities such as language, voice, and facial expressions, that opinions and emotions are expressed. Data in this domain exhibits complex multi-relational and temporal interactions. Learning from this data is a fundamentally challenging research problem. In this paper, we propose Modal-Temporal Attention Graph (MTAG). MTAG is an interpretable graph-based neural model that provides a suitable framework for analyzing multimodal sequential data. We first introduce a procedure to convert unaligned multimodal sequence data into a graph with heterogeneous nodes and edges that captures the rich interactions across modalities and through time. Then, a novel graph fusion operation, called MTAG fusion, along with a dynamic pruning and read-out technique, is designed to efficiently process this modal-temporal graph and capture various interactions. By learning to focus only on the important interactions within the graph, MTAG achieves state-of-the-art performance on multimodal sentiment analysis and emotion recognition benchmarks, while utilizing significantly fewer model parameters.

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