DGL: Dynamic Global-Local Prompt Tuning for Text-Video Retrieval

• URL: http://arxiv.org/abs/2401.10588v1
• Date: Fri, 19 Jan 2024 09:58:06 GMT
• Title: DGL: Dynamic Global-Local Prompt Tuning for Text-Video Retrieval
• Authors: Xiangpeng Yang, Linchao Zhu, Xiaohan Wang, Yi Yang
• Abstract summary: Text-video retrieval is a critical multi-modal task to find the most relevant video for a text query. We propose DGL, a cross-modal Dynamic prompt tuning method with Global-Local video attention. In contrast to previous prompt tuning methods, we employ the shared latent space to generate local-level text and frame prompts.
• Score: 73.82017200889906
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Text-video retrieval is a critical multi-modal task to find the most relevant video for a text query. Although pretrained models like CLIP have demonstrated impressive potential in this area, the rising cost of fully finetuning these models due to increasing model size continues to pose a problem. To address this challenge, prompt tuning has emerged as an alternative. However, existing works still face two problems when adapting pretrained image-text models to downstream video-text tasks: (1) The visual encoder could only encode frame-level features and failed to extract global-level general video information. (2) Equipping the visual and text encoder with separated prompts failed to mitigate the visual-text modality gap. To this end, we propose DGL, a cross-modal Dynamic prompt tuning method with Global-Local video attention. In contrast to previous prompt tuning methods, we employ the shared latent space to generate local-level text and frame prompts that encourage inter-modal interaction. Furthermore, we propose modeling video in a global-local attention mechanism to capture global video information from the perspective of prompt tuning. Extensive experiments reveal that when only 0.67% parameters are tuned, our cross-modal prompt tuning strategy DGL outperforms or is comparable to fully finetuning methods on MSR-VTT, VATEX, LSMDC, and ActivityNet datasets. Code will be available at https://github.com/knightyxp/DGL

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