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MaPLe: Multi-Modal Prompt Learning

CVPR 2023 · Vision-language and multimodal › CLIP and zero-shot · approach: Prompt learning for CLIP · 886 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use coupled prompts in both vision and language branches instead of independent V-L prompts (ablation)CLIP ViT-B/16 · Base-to-novel generalization, 11 datasets averageHarmonic mean: 77.90 -> 78.55Helped
Add language-branch deep prompts rather than only vision-branch deep prompts (ablation)CLIP ViT-B/16 · Base-to-novel generalization, 11 datasets averageHarmonic mean: 76.68 -> 77.56Helped
Add deep prompts in both branches rather than shallow MaPLe prompts (ablation)CLIP ViT-B/16 · Base-to-novel generalization, 11 datasets averageHarmonic mean: 76.67 -> 78.55Helped
Use one shared V-L coupling function across layers (ablation)MaPLe · Base-to-novel generalization, 11 datasets averageHarmonic mean: 78.55 -> 78.11Hurt
Increase prompt length (ablation)MaPLe · Base-to-novel generalizationNovel accuracyHurt
Initialize prompts in every layer with the same template rather than only the first layer (ablation)MaPLe · Base-to-novel generalization, 11 datasets averageHarmonic mean: 78.55 -> 77.88Hurt
Randomly initialize prompts rather than use the template in the first layer (ablation)MaPLe · Base-to-novel generalization, 11 datasets averageHarmonic mean: 78.55 -> 78.52Hurt
Project vision prompts to language prompts instead of language prompts to vision prompts (ablation)MaPLe · Base-to-novel generalization, 11 datasets averageHarmonic mean: 78.55 -> 77.10Hurt
Add progressive conditioning of prompts across transformer blocks (ablation)MaPLe · Base-to-novel generalization, 11 datasets averageHarmonic mean: 78.55 -> 78.11Hurt
Combine MaPLe with independent V-L prompting (ablation)MaPLe · Base-to-novel generalization, 11 datasets averageHarmonic mean: 78.55 -> 77.94Hurt
Use multimodal branch-aware prompting instead of Co-CoOpCLIP ViT-B/16 · Base-to-novel generalization, 11 datasets averageNovel accuracy: 71.69 -> 75.14Helped
Use multimodal branch-aware prompting instead of Co-CoOpCLIP ViT-B/16 · Cross-dataset evaluation, 10 target datasets averageAccuracy: 65.74 -> 66.30Helped

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