a                                       data loading
a                                       load data set
0                                       training data set
0                                       no header line
0                                       no named rows
4                                       4 classes
ews.dat
rms.dat
nb.dat
bl.dat
a                                       load data set
1                                       test data set
0                                       no header line
0                                       no named rows
4                                       4 files
ews_test.dat
rms_test.dat
nb_test.dat
bl_test.dat
x                                       return
x                                       return