Literature Notes

Multi-class N-pair loss (Sohn 2016) is a generalization of triplet loss* allowing joint comparision‣ among more than one negative samples. When applied on a pair of positive samples 𝐳_𝐢 and 𝐳_𝐣 (𝑦_𝑖=𝑦_𝑗), where z_i z_j is the inner product, which is equivalent to cosine similarity when both vectors have unit norm.

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