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[Fix Doc] Fix broken link (.pdf) for npair_loss_cn #7557

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Oct 17, 2025
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[Fix Doc] Fix broken link (.pdf) for npair_loss_cn #7557

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2 changes: 1 addition & 1 deletion docs/api/paddle/nn/functional/npair_loss_cn.rst
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Expand Up @@ -5,7 +5,7 @@ npair_loss

.. py:function:: paddle.nn.functional.npair_loss(anchor, positive, labels, l2_reg=0.002)
参考阅读 `Improved Deep Metric Learning with Multi class N pair Loss Objective <http://www.nec-labs.com/uploads/images/Department-Images/MediaAnalytics/papers/nips16_npairmetriclearning.pdf>`_
参考阅读 `Improved Deep Metric Learning with Multi class N pair Loss Objective <http://papers.nips.cc/paper/6200-improved-deep-metric-learning-with-multi-class-n-pair-loss-objective.pdf>`_

NPair 损失需要成对的数据。NPair 损失分为两部分：第一部分是对嵌入向量进行 L2 正则化；第二部分是每一对数据的相似性矩阵的每一行和映射到 ont-hot 之后的标签的交叉熵损失的和。

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