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View Code? Open in Web Editor NEWOfficial Implementation of "Read-only Prompt Optimization for Vision-Language Few-shot Learning", ICCV 2023
License: MIT License
Official Implementation of "Read-only Prompt Optimization for Vision-Language Few-shot Learning", ICCV 2023
License: MIT License
def build_attention_mask(self):
# lazily create causal attention mask, with full attention between the vision tokens
# pytorch uses additive attention mask; fill with -inf
mask = torch.empty(self.context_length, self.context_length)
mask.fill_(float("-inf"))
mask.triu_(1) # zero out the lower diagonal
return mask
The attn_mask used in CLIP has been ensured that the attention flow from learnable prompts to existing features is impossible: each token only considers the tokens before it, and not the tokens after it. The analysis of (a) Conventional Prompt Tuning (CoCoOp) (b) Linear Probing and (c) Read-only Prompt Optimization is untenable.
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