Where do i find the config file?
The default metrics are based on those used in Pascal VOC evaluation.
To use the COCO object detection metrics add metrics_set: "coco_detection_metrics" to the eval_config message in the config file.
To use the COCO instance segmentation metrics add metrics_set: "coco_mask_metrics" to the eval_config message in the config file.
https://tensorflow-object-detection-api-tutorial.readthedocs.io/en/latest/install.html