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Table 2 Correct classification rates for age range detection using random forests (Rf) and kernel discriminant analysis (Kda)

From: Automatic prediction of age, gender, and nationality in offline handwriting

  Arabic English Both
  Same text (%) Different text (%) Same text (%) Different text (%) Same text (%) Different text (%)
Feature RF KDA RF KDA RF KDA RF KDA RF KDA RF KDA
f1 53.7 56.5 56.9 52.1 47.2 58.3 53.6 49.2 50.4 52.9 53.2 47.2
f2 56.2 52.0 59.3 53.6 51.1 51.4 57.4 53.0 55.4 49.8 58.7 50.4
f3 55.9 54.9 56.2 49.9 49.7 52.1 53.3 51.1 52.4 54.0 53.5 45.4
f4 56.5 54.4 50.7 51.9 49.3 53.1 50.9 51.1 51.9 50.5 52.5 46.8
f5 55.9 48.9 56.6 48.9 50.4 43.8 54.0 48.9 54.1 43.6 55.8 47.2
f6 58.7 48.2 60.7 48.6 50.4 49.3 55.4 50.5 55.1 45.7 58.4 46.1
f7 59.1 53.9 61.4 55.3 50.7 53.1 56.8 54.6 54.6 51.6 58.7 48.9
f8 49.8 57.2 51.7 52.6 48.2 55.9 50.5 56.5 49.6 55.4 52.0 49.7
f9 56.2 53.9 55.5 53.4 49.7 56.9 54.7 56.2 54.8 48.8 54.6 47.2
f10 57.1 56.0 55.5 52.9 48.2 53.8 52.6 54.0 54.4 55.7 54.8 48.6
f11 55.6 53.4 55.2 54.8 47.9 47.2 52.9 56.5 53.4 54.3 53.2 49.3
f12 54.0 53.5 53.1 53.3 50.4 49.7 56.4 53.7 52.8 52.9 54.9 52.5
f13 55.2 53.5 55.5 52.6 50.4 47.9 55.7 53.0 52.6 54.0 56.1 47.9
f14 56.2 53.7 54.1 52.4 53.2 51.0 54.7 55.9 54.1 51.2 56.5 47.9
f15 56.2 50.8 56.2 52.3 52.8 48.6 54.7 50.5 54.4 51.9 57.2 51.1
f16 55.9 49.6 57.2 52.8 50.4 48.3 57.8 48.6 53.9 50.9 56.3 51.4
f17 55.2 51.0 58.3 52.8 48.9 49.0 55.4 50.2 53.4 50.9 54.9 50.4
f18 55.6 54.1 58.6 52.8 49.3 55.2 55.1 56.2 53.1 49.8 55.1 49.3
f19 57.1 54.9 56.6 53.8 50.4 53.8 55.4 56.2 54.4 51.9 55.3 48.6
f20 58.1 53.0 55.2 52.9 50.7 51.0 54.2 54.9 54.4 52.6 54.6 49.7
f21 57.5 51.3 54.1 53.4 49.7 48.3 54.6 56.8 54.3 51.6 54.2 50.0
f22 57.1 50.3 55.9 53.8 50.7 47.2 53.7 54.3 54.3 50.9 54.1 50.4
f23 55.2 49.9 58.3 53.3 49.7 47.6 54.9 53.3 53.1 51.9 54.8 47.5
f24 54.9 50.3 58.3 52.4 50.7 48.3 56.5 53.0 53.8 51.9 56.3 49.7
f25 56.2 50.4 60.0 54.4 51.8 49.3 58.0 53.3 54.1 53.6 58.6 51.1
f26 56.8 51.8 58.6 54.8 51.8 49.3 58.7 51.4 54.9 53.6 57.7 51.4
f1 + f2 + f3 58.7 53.9 62.4 50.4 52.8 54.1 59.9 49.5 55.8 54.0 60.6 46.8
f4 +,…, + f7 58.4 50.8 60.7 52.3 50.0 48.6 56.4 53.0 54.4 47.1 58.5 48.6
f8 +,…, + f17 57.1 49.1 58.3 54.1 48.9 50.7 54.7 51.4 54.1 49.5 56.7 53.2
f18 +,…, + f26 55.9 50.1 57.2 53.9 50.7 49.7 56.4 55.9 53.1 53.3 56.8 49.3
f1 +,…, + f26 58.1 53.0 59.3 55.8 51.4 53.5 57.4 53.3 55.1 49.8 59.4 53.9