Incorporating Pre-trained Model Prompting in Multimodal Stock Volume Movement Prediction

• URL: http://arxiv.org/abs/2309.05608v1
• Date: Mon, 11 Sep 2023 16:47:01 GMT
• Title: Incorporating Pre-trained Model Prompting in Multimodal Stock Volume Movement Prediction
• Authors: Ruibo Chen, Zhiyuan Zhang, Yi Liu, Ruihan Bao, Keiko Harimoto, Xu Sun
• Abstract summary: We propose the Prompt-based MUltimodal Stock volumE prediction model (ProMUSE) to process text and time series modalities. We use pre-trained language models for better comprehension of financial news. We also propose a novel cross-modality contrastive alignment while reserving the unimodal heads beside the fusion head to mitigate this problem.
• Score: 22.949484374773967
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Multimodal stock trading volume movement prediction with stock-related news is one of the fundamental problems in the financial area. Existing multimodal works that train models from scratch face the problem of lacking universal knowledge when modeling financial news. In addition, the models ability may be limited by the lack of domain-related knowledge due to insufficient data in the datasets. To handle this issue, we propose the Prompt-based MUltimodal Stock volumE prediction model (ProMUSE) to process text and time series modalities. We use pre-trained language models for better comprehension of financial news and adopt prompt learning methods to leverage their capability in universal knowledge to model textual information. Besides, simply fusing two modalities can cause harm to the unimodal representations. Thus, we propose a novel cross-modality contrastive alignment while reserving the unimodal heads beside the fusion head to mitigate this problem. Extensive experiments demonstrate that our proposed ProMUSE outperforms existing baselines. Comprehensive analyses further validate the effectiveness of our architecture compared to potential variants and learning mechanisms.

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