CONTENTS

Annex 1  Method for specifying accuracy and cross-calibration of VQMs
 1     Scope
 2     Accuracy of a VQM
        2.1     Nomenclature and coordinate scales
        2.2     Fitting VQM values to subjective data
        2.3     METRIC 1: VQM accuracy based on statistical significance
        2.4     METRIC 2: VQM root-mean-squared error (RMSE) calculation
        2.5     Classification plots
 3     Cross-calibrating two VQMs
Appendix 1 to Annex 1  Application of this Recommendation in the evaluation and validation of proposed VQMs
 1     Elements of a full VQM disclosure
 2     Scope/limitations of a VQM
Appendix 2 to Annex 1  MATLAB Source Code
Appendix 3 to Annex 1  Data-fitting to a common scale of VQM
 1     Polynomial of order M
 2     Logistic Function I
 3     Logistic Function II