"This Recommendation defines methods@ metrics and procedures for statistical evaluation@ qualification and comparison of objective quality prediction models. This Recommendation can be used to assess any objective model that predicts a subjective judgement of a subjective test procedure. Guidance is provided on the design and cleansing of subjective test data@ as well as the statistical metrics for model selection and characterization. Frameworks@ metrics and example procedures are described. Specific procedures@ minimum performance requirements or objectives to be used when selecting a model are not provided@ as these depend on the scope of the model being assessed and are not part of this Recommendation. In this Recommendation@ the term ""sample"" refers to any type of media@ and the terms ""model"" and ""algorithm"" are interchangeable."