<p>fields.InputDataFields.groundtruth_weights is <em>most likely</em> a weight that gets multiplied with the loss. See 3.1 in <a href="https://arxiv.org/pdf/1708.02002.pdf" rel="nofollow noreferrer">https://arxiv.org/pdf/1708.02002.pdf</a></p>
Information on new fields TFRecord format for Object Detection API
<p>I was digging through the <a href="https://github.com/tensorflow/models/blob/master/research/object_detection/data_decoders/tf_example_decoder.py" rel="nofollow noreferrer">TfExampleDecoder</a> and saw some fields that don't appear to be documented anywhere. Starting in line 207:</p>

<p><code>
fields.InputDataFields.groundtruth_group_of: (slim_example_decoder.Tensor('image/object/group_of')),
fields.InputDataFields.groundtruth_weights: (slim_example_decoder.Tensor('image/object/weight')),
</code></p>

<p>Is there documentation for the purpose that these serve?</p>