High-dimensional reality: Why cross-modal retrieval works despite the gap
gabriberton · x · 2026-08-19
Explains why cross-modal retrieval works despite the visible modality gap. The hypersphere is high-dimensional (usually 1000 dims), so the gap might exist only in one dimension. Along most dimensions, positive cross-modal samples are actually close, explaining the effectiveness of text-to-image retrieval.
Related event: Modality Gap in VLMs: Flaw or Feature?(7 posts)→
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