/usr/share/doc/vowpal-wabbit-doc/examples/test/train-sets/ref/cbify_epsilon.stderr is in vowpal-wabbit-doc 8.1.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | Num weight bits = 18
learning rate = 0.5
initial_t = 0
power_t = 0.5
using no cache
Reading datafile = train-sets/multiclass
num sources = 1
average since example example current current current
loss last counter weight label predict features
0.000000 0.000000 1 1.0 1 1 2
0.500000 1.000000 2 2.0 2 1 2
0.750000 1.000000 4 4.0 4 3 2
0.875000 1.000000 8 8.0 8 7 2
finished run
number of examples per pass = 10
passes used = 1
weighted example sum = 10.000000
weighted label sum = 0.000000
average loss = 0.900000
total feature number = 20
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