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Table 2 The process of variable selection

From: Characterizing mammographic images by using generic texture features

Feature group Total
features
Preselected featuresa Selected features
within feature groupb
Features
finally selectedc
Moment-based features 76 71 8 1
Form-based features 86 74 16 4
Statistical features 130 86 46 29
Structural features 108 90 23 10
Spectral features 70 21 6 2
Total 470 342 99 46
  1. Numbers of features are shown. aPreselection due to high correlations between features. bFeature group scores were constructed with these features. cThe final score was constructed with these features.