# Triplet Loss’ derivative of VGG Face

We starts with the formula (1) of the paper.

We have:

By chain rule, we have:

We also have:

– the th element of .

– the th element of .

So:

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# Triplet Loss’ derivative of VGG Face

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We starts with the formula (1) of the paper.

We have:

By chain rule, we have:

We also have:

– the th element of .

– the th element of .

So: