Why output_tensors=["Placeholder:0", "concat_9:0", "mul_9:0"]

[float123]

I wan to know why output_tensors=["Placeholder:0", "concat_9:0", "mul_9:0"], these three nodes are not at the end of the model. And what does ":0" mean? Please advise，thank you.

[ardianumam]

Why not at the end of model

Because after the network output, we still have further operation, such as loss calculation, etc.

what :0 is

It is tensorflow convention when we wanna call a value from a tensor by tensor name, we need to add :0 in the end of it.

[float123]

Thank you very much for your reply，I am currently researching yolov3 to TensorRT，your project has helped me a lot. There is still a question I would like to ask，why do we choose output_tensor to be "concat_9" and "mul_9", or what are their return values? the model is very troubled by me.

[ardianumam]

Those only tensor names. Everyone can name the tensor any name he wants. Those output in object detector correspond to the outputs of classification and bonding box predictions.

[Pidem]

Hey, I am confused. Where did you get this model architecture from? Did you fork YunYang's model. More specifically, why is NMS part of your model ?

[DongXinru]

I wonder how you got your yolov3 model file