2022

Dual Modality Prompt Tuning for Vision-Language Pre-Trained Model

Xing, Yinghui, Wu, Qirui, Cheng, De et al.

Understand

With the emergence of large pre-trained vison-language model like CLIP, transferable representations can be adapted to a wide range of downstream tasks via prompt tuning.

  • Prompt tuning tries to probe the beneficial information for downstream tasks from the general knowledge stored in the pre-trained model.
  • A recently proposed method named Context Optimization (CoOp) introduces a set of learnable vectors as text prompt from the language side.
  • However, tuning the text prompt alone can only adjust the synthesized "classifier", while the computed visual features of the image encoder can not be affected , thus leading to sub-optimal solutions.

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