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The Hyperspherical Geometry of CLIP Latent Space: A Semantic Mixture Model

arXiv cs.LG · 3d ago Cached

This paper proposes modeling the CLIP latent space using Mixtures of von Mises–Fisher distributions on the unit hypersphere, capturing its directional and multimodal structure better than Gaussian assumptions. The model improves long-tailed and out-of-distribution detection and provides a semantic decomposition of CLIP embeddings.

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