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Table 4 Result of estimated coefficients for vocal features for each SC type using LASSO

From: A practical approach to Sasang constitutional diagnosis using vocal features

  Male Female
Features β ^ 1 , lasso λ ' β ^ 2 , lasso λ ' β ^ 3 , lasso λ ' β ^ 1 , lasso λ ' β ^ 2 , lasso λ ' β ^ 3 , lasso λ '
β ^ k 0 0.310 −0.309 0.000 0.042 −0.157 0.116
sF0 0.081    −0.112 0.015 .
sFSTD   −0.209 0.168   −0.048 .
sI0   0.159 −0.212 −0.071 0.062 .
sISTD 0.107   −0.019    −0.040
sSPD −0.004   0.081 0.048   −0.015
sLPR1    0.060   0.017 −0.004
sLPR2 0.197   −0.126 0.049   −0.067
sLPR3   −0.031     −0.012
sMFCC0   −0.007 0.207    
sMFCC1 −0.213 0.065   −0.027   0.081
sMFCC2   −0.068 0.218 −0.071 0.001  
sMFCC3 0.238   −0.127 −0.083 0.032  
sMFCC4 0.124      0.020
sMFCC5   0.096 −0.105 0.012 −0.010  
sMFCC6   0.170 −0.028 −0.035   
sMFCC7   0.126 −0.067 −0.126 0.016  
sMFCC8   0.032   0.263   
sMFCC9   −0.119   0.215 −0.038  
sMFCC10   −0.099 0.146    
sMFCC11 0.109 −0.074   −0.032   0.027
sMFCC12    0.046 −0.099   0.126
  1. β ^ 1 , lasso λ ' , β ^ 2 , lasso λ ' , and β ^ 3 , lasso λ ' represent result of estimated coefficients via LASSO for each SC group, TE, SE, and SY, respectively, where λ ' = e log λ ' , chosen from the result of ten-fold cross validation. The shrinkage coefficients to zero are annotated with ‘.’.