no fine_tune_checkpoint field in pipeline.config

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I want to fine tune CenterNet MobileNetV2 FPN Keypoints 512x512 for object detection from: https://github.com/tensorflow/models/blob/master/research/object_detection/g3doc/tf2_detection_zoo.md . I dowloaded the tar and extracted. The pipeline.config doen not have fine_tune_checkpoint field, so I am not able to fine tune on pretrained model. I have two questions:- Is there any way to add the field for fine tuning? Is it because the output of this model is keypoints?

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That field is defined as an optional in train.proto, so you can still use it.

In this case, it would be written as follows.(path of the folder should match your environment)

fine_tune_checkpoint: "centernet_mobilenetv2_fpn_kpts/checkpoint/ckpt-301"