Fusion or defusion? Flexible vision-and-language pre-training
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Existing approaches in the vision-and-language pre-training (VLP) paradigm mainly deploy either fusion-based encoders or dual-encoders, failing to achieve both effectiveness and efficiency in downstream multimodal tasks.In this paper, we build a flexible VLP model by incorporating cross-modal fusions into a dualencoder architecture, where the introduced fusion modules can be easily decoupled from the dual encoder so as to switch the model to a fusion-free one.To better absorb cross-modal features from the fusion modules, we design a cross-modal knowledge transfer strategy along with other comprehensive pre-training tasks to guide the training process, which can further strengthen both the fusion-based and fusionfree representation learning.Extensive experiments conducted on various downstream visionlanguage tasks show that our proposed model is well-equipped with effectiveness as well as efficiency, demonstrating a superior performance compared with other strong VLP models.
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During training, specialized encoders extract features from different modalities, then cross-modal alignment mechanisms integrate them.
“During training, the model employs specialized encoders (e.g., convolutional neural networks for visual data, transformer architectures for text and audio data) [171,172] to extract features from different modalities, and then interacts and integrates these features through cross-modal alignment mechanisms [173,174].”
From Multimodal fusion and vision–language models: A survey for robot vision (2026) · cites this paper as [173]
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Multimodal fusion and vision–language models: A survey for robot vision
Han, X., Chen, S., Fu, Z., Feng, Z., Fan, L., An, D., Wang, C., Guo, L., Meng, W., Zhang, X., et al. (2026) · Information Fusion · doi:10.1016/j.inffus.2025.103652 · Cited by 41 · see citing works
- Authors
- Sun, R., Li, Z., Ding, Y., Wang, Q., Wang, J., Zheng, H., Wu, W., & Xian, Y.
- Affiliations
- Tsinghua Shenzhen International Graduate School (CN)
- Meituan (China) (CN)
- Meta (United States) (US)
- Venue
- Findings of the Association for Computational Linguistics: ACL 2023
- Published
- 2023
- Pages
- 5105-5119
- OpenAlex
- W4385570492
- Cited by
- 2
- References
- 4
- Citations by year
- 2026: 1 · 2025: 1
- FWCI
- 0.21
- Type
- conference paper
- Language
- en
- Open access
- hybrid
- dx.doi.org
- Licence
- cc-by
- Locations
- Findings of the Association for Computational Linguistics: ACL (Findings of ACL) (publishedVersion, cc-by)
- Funders
- National Natural Science Foundation of China (62276154, No.62276154)
- Natural Science Foundation of Guangdong Province (2023A1515012914)
- Beijing Nova Program
- Tsinghua Shenzhen International Graduate School
- Topics
- Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Multimodal Machine Learning Applications
- Physical Sciences › Computer Science › Artificial Intelligence › Domain Adaptation and Few-Shot Learning
- Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Advanced Image and Video Retrieval Techniques
- Keywords
- cross-modal fusion, dual encoder, cross-modal knowledge transfer, multimodal representation learning, pre-training tasks
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