Difference in architecture of SSD Mobilenet V1 and this model

[raghavg96]

Hi I visualised both the graphs in tensorboard. So I was running into an issue with a cycle present in the graph. I noticed a small difference in the two models and would need your help in explaining it.

So this is the architecture of ssd mobilenet v1 from tensorflow detection models zoo.

This is the preview of your frozen graph.

Can you please explain which operation is happening in this Zeros block?

Because I don't see these blocks in usual ssd_mobilenet_v1.