Caffe的第二个“最高"排名“准确性"层的 [英] Caffe's second "top" of `"Accuracy"` layer

问题描述

查看 层，我看到该层有第二个输出/顶部"的选项.
第二个输出产生什么?

Looking at the code of "Accuracy" layer, I see there is an option for a second output/"top" for this layer.
What does this second output produce?

推荐答案

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Looking at accuracy_layer.hpp, where the number of outputs for the layer are defined, there's this comment:

// If there are two top blobs, then the second blob will contain
// accuracies per class.

因此，"Accuracy"层的第二个"top"仅报告每个类的准确性.

So, the second "top" of the "Accuracy" layer simply reports per-class accuracies.

只是作为层精度的附带说明，所报告的精度通过有效"预测的数量进行了标准化(与对损耗层使用normalization: VALID相同).

Just as a side note for layer Accuracy, the reported Accuracy is normalized by the number of "valid" predictions (same as using normalization: VALID for loss layers).

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