The user may define subclasses of this class.
The name of the user attribute (or a category or class in the case of a classification) is stated, as is a description of the higher order source used for the comparison. The statistics component includes a description of individual statistics pertinent to the data set. An error (or confusion or misclassification) matrix may also be given. Class statistics associated with raster or vector overlay procedures should be given under statistics, as the error matrix does not contain marginal results. Parameters used for matrix normalization should be defined under statistics as well. Note that classification method is not provided here, since it is expected under processing history as specified under Lineage. Finally, comments may be provided.