What's the use of these three lines of code?

bailvwangzi / repulsion_loss_ssd

Repulsion Loss: Detecting Pedestrians in a Crowd. https://arxiv.org/abs/1711.07752

MIT License

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Open seekFire opened 3 years ago

seekFire commented 3 years ago

I can't understand the use of these three lines, it seems that they didn't change the value of any tensor.