Context

• There have been some inference jobs with included evaluation which failed because the ground truth NML did not contain any bounding box or consisted only of an empty tree.

Expected Behavior

• Unusable ground truth (e.g. no bounding box, no tree, empty tree) should be recognized before starting inference (in case evaluation is selected) and the user should not be able to start it then and get an error message instead.
• It would also be useful if the evaluation feature would be explained more, i.e., what the user should supply as ground truth.

Current Behavior

• The inference is started and fails later.