Multimodal Side-Tuning for Document Classification

16 Jan 2023  ·  Stefano Pio Zingaro, Giuseppe Lisanti, Maurizio Gabbrielli ·

In this paper, we propose to exploit the side-tuning framework for multimodal document classification. Side-tuning is a methodology for network adaptation recently introduced to solve some of the problems related to previous approaches. Thanks to this technique it is actually possible to overcome model rigidity and catastrophic forgetting of transfer learning by fine-tuning. The proposed solution uses off-the-shelf deep learning architectures leveraging the side-tuning framework to combine a base model with a tandem of two side networks. We show that side-tuning can be successfully employed also when different data sources are considered, e.g. text and images in document classification. The experimental results show that this approach pushes further the limit for document classification accuracy with respect to the state of the art.

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Task Dataset Model Metric Name Metric Value Global Rank Result Benchmark
Document Image Classification RVL-CDIP Multimodal (ResNet50) Accuracy 92.7% # 20
Parameters 57M # 14
Document Image Classification RVL-CDIP Multimodal (MobileNetV2) Accuracy 92.2% # 24
Parameters 12M # 12
Document Image Classification Tobacco-3482 Multimodal Side-Tuning (MobileNetV2) Accuracy 90.50 # 4
Document Image Classification Tobacco-3482 Multimodal Side-Tuning (ResNet50) Accuracy 90.30 # 5

Methods