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Cross-attention lets queries from one representation attend to keys and values from another representation.
Déglul tegtal biiIA-nettali · ~2 min
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Résumé
It is used to connect source and target sequences or different modalities.
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Cross-attention lets queries from one representation attend to keys and values from another. The Transformer uses this in encoder-decoder layers; latent diffusion uses it for text-conditioned generation. Flamingo uses gated cross-attention layers to connect visual features to a language model and is designed to ingest arbitrarily interleaved visual and textual inputs, including images or video. These are architecture-specific examples, not a universal multimodal design. In Flamingo, cross-attention blocks are gated by a tanh-transformed learned scalar initialized to zero; this is an architecture-specific control and not a claim about how often cross-attention is used across multimodal systems.
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In an encoder-decoder Transformer, decoder queries attend to encoder outputs.
Latent diffusion models use cross-attention to condition image latents on text embeddings.
Flamingo inserts cross-attention layers so a language model can use visual features.
Different sequence lengths are possible because queries and key-value context need not have matching lengths.
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When inspecting a multimodal model, identify which stream supplies queries and which supplies keys and values. Evaluate alignment and failure cases across the relevant modalities. The cited papers do not establish one universal cross-attention design.
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What is Cross-Attention?
Cross-attention lets queries from one representation attend to keys and values from another representation. It is used to connect source and target sequences or different modalities.
Lan mooy wuutale bàyyi xel ci sa bopp ak bàyyi xel ci yeneen mbir?
Cross-attention dafay xëcc laaj yi ci benn rang (lu melni, decoder bi) ak caabi ak valeur yu bawoo ci beneen (lu melni, encoder bi), bàyyi ñaar ñi ñu jëflante.
Ci biir Transformateur encodeur-decodeur, fan la laajte yi jëm ci cross-attention di jogee?
Dekodeer bi dafay formu ay laaj ci génnekaay bimu defar ci wàll, ba noppi jëfandikoo génnug enkodeer bi ni caabi ak valeur ngir génne leeral yi war.
Lan moo waral ñaari toppalante yi ci cross-attention mën nañu am guddaay wala anam yu wuute?
Ginaaw laajte yi ci benn balluwaay lañuy bawoo, caabi yi/valeur yi ci beneen balluwaay, toppalante yi mën nañu wuute ci guddaay, làkk, wala anam.
naka lay def ba diffusion stable di jëfandikoo cross-attention?
Cross-attention dafay may wàll wu nekk ci nataal biñ defar mu bàyyi xel ci bind bi, daal di gëdd nataal yi ci kàddu yi.
Ban jëf ci math la cross-attention ak bàyyi sa bopp bokk?
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