  Dataset licensing is currently an issue in the development of machine
learning systems. And in the development of machine learning systems, the most
widely used are publicly available datasets. However, since the images in the
publicly available dataset are mainly obtained from the Internet, some images
are not commercially available. Furthermore, developers of machine learning
systems do not often care about the license of the dataset when training
machine learning models with it. In summary, the licensing of datasets for
machine learning systems is in a state of incompleteness in all aspects at this
stage.
  Our investigation of two collection datasets revealed that most of the
current datasets lacked licenses, and the lack of licenses made it impossible
to determine the commercial availability of the datasets. Therefore, we decided
to take a more scientific and systematic approach to investigate the licensing
of datasets and the licensing of machine learning systems that use the dataset
to make it easier and more compliant for future developers of machine learning
systems.
