vec2vec Hits 100% Top-1 Accuracy and 0.96 Cosine Similarity on Hardest Embedding Pairs
maier_ak · x · 2026-09-10
vec2vec attains cosine similarity up to 0.96, 100% top-1 accuracy, and mean rank 1 on the hardest cross-backbone pairs. On out-of-distribution data — tweets and clinical notes — it still exceeds 0.73 cosine and far outperforms random guessing, underscoring both the method's effectiveness and the privacy risk of stolen embedding stores.
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