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Adding contrastive task for Perceiver implementation #61

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Adding contrastive task for Perceiver implementation #61

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@dat-rohit dat-rohit commented Jan 4, 2026 •
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  • Research hypothesis: Perceiver Resampler may benefit from contrastive training
  • Positives are patches from the same region; negatives are patches from different region
  • Since Perceiver compresses regional content and only outputs embedding for a single target patch, I implemented multi-target sampling: from each given region, we sample K patches that constitue our positive pairs

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