Diffusion-based Multi-modal Synergy Interest Network for Click-through Rate Prediction

• URL: http://arxiv.org/abs/2508.21460v1
• Date: Fri, 29 Aug 2025 09:46:16 GMT
• Title: Diffusion-based Multi-modal Synergy Interest Network for Click-through Rate Prediction
• Authors: Xiaoxi Cui, Weihai Lu, Yu Tong, Yiheng Li, Zhejun Zhao,
• Abstract summary: In click-through rate prediction, click-through rate prediction is used to model users' interests.<n>Most of the existing CTR prediction methods are mainly based on the ID modality.<n>This paper proposes the Diffusion-based Multi-modal Synergy Interest Network (Diff-MSIN) framework for click-through prediction.
• Score: 10.958001571669415
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In click-through rate prediction, click-through rate prediction is used to model users' interests. However, most of the existing CTR prediction methods are mainly based on the ID modality. As a result, they are unable to comprehensively model users' multi-modal preferences. Therefore, it is necessary to introduce multi-modal CTR prediction. Although it seems appealing to directly apply the existing multi-modal fusion methods to click-through rate prediction models, these methods (1) fail to effectively disentangle commonalities and specificities across different modalities; (2) fail to consider the synergistic effects between modalities and model the complex interactions between modalities. To address the above issues, this paper proposes the Diffusion-based Multi-modal Synergy Interest Network (Diff-MSIN) framework for click-through prediction. This framework introduces three innovative modules: the Multi-modal Feature Enhancement (MFE) Module Synergistic Relationship Capture (SRC) Module, and the Feature Dynamic Adaptive Fusion (FDAF) Module. The MFE Module and SRC Module extract synergistic, common, and special information among different modalities. They effectively enhances the representation of the modalities, improving the overall quality of the fusion. To encourage distinctiveness among different features, we design a Knowledge Decoupling method. Additionally, the FDAF Module focuses on capturing user preferences and reducing fusion noise. To validate the effectiveness of the Diff-MSIN framework, we conducted extensive experiments using the Rec-Tmall and three Amazon datasets. The results demonstrate that our approach yields a significant improvement of at least 1.67% compared to the baseline, highlighting its potential for enhancing multi-modal recommendation systems. Our code is available at the following link: https://github.com/Cxx-0/Diff-MSIN.

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