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Table 5 Results for T2.1 and T2.2: fivefold cross validation equal error rates (EER) for each phrase under Gaussian naive Bayes (NB) and Euclidean nearest neighbour (NN)

From: Keystroke biometrics in the encrypted domain: a first study on search suggestion functions of web search engines

BiSi

pPT

Missing values

Balanced

NB (EER%)

NN (EER%)

B1AS1

p1

Excluded

   

  

Interpolated

18.48

30.11

   

24.12

34.36

 

p2

Excluded

   

  

Interpolated

19.81

26.06

   

12.18

25.36

 

p3

Excluded

16.47

24.04

   

18.04

22.28

  

Interpolated

25.58

27.75

   

27.56

27.77

 

p1p2p3

Interpolated

17.18

13.34

   

11.37

13.35

B1LS1

p1

N/A

15.49

16.31

   

12.97

16.83

 

p3

N/A

9.18

9.41

   

5.11

9.44

 

p1p3

N/A

11.17

12.29

   

9.73

15.60

  1. Results are shown for when samples with missing values are excluded (not always possible if too few samples) or included with interpolations and for sample sets with either unbalanced or balanced classes