Table 4 

The variance of F1 for four algorithms and four functional groups 

algorithms 
< 60 
60100 
100300 
> 300 


twoclass 
0.0636 
0.0929 
0.1034 
0.0536 
twoclassbal 
0.0142 
0.0083 
0.0462 
0.0215 
PSoL 
0.0594 
0.0813 
0.0629 
0.0456 
SPERNE 
0.0523 
0.0485 
0.0359 
0.0420 


Table 4 lists the variances of F1 for all algorithms on four functional terms groups. These values can evaluate the stability of algorithms on different groups. While only few training examples are used to learn classifier, overfitting may occur and makes algorithm unstable. 

Chen et al. BMC Genomics 2010 11(Suppl 2):S11 doi:10.1186/1471216411S2S11 