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. 2017 Dec 1;35(2):55–65.

Table 5. PLS results for set 2.

# PCs % cumulated variance RMSEV Q (2) RMSEC R2
Women
App A 1 97.89 5.09 0.09 5.03 0.10
App B 1 98.21 4.88 0.13 4.83 0.14
Men
App A 2 99.56 6.17 0.73 5.98 0.75
App B 2 99.49 5.89 0.75 5.61 0.78

#PCs = Principal Component; % cumulated variance = amount of information according to the number of optimal principal components; RMSEV = Root Mean Square Error of Validation; Q2 = internal correlation coefficient model cross validation; RMSEC = Root Mean Square Error of Calibration; R2 = correlation coefficient for calibration; App A = “How Old Do I Look? – Age Camera”; App B = “How Old Am I? – Age Camera, Do You Look Like in Selfie Face Pic?”.