/usr/share/doc/vowpal-wabbit-doc/examples/test/train-sets/ref/wiki1K.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 22 23 24 25 | Num weight bits = 13
learning rate = 1
initial_t = 0
power_t = 0.5
using no cache
Reading datafile = train-sets/wiki256.dat
num sources = 1
average since example example current current current
loss last counter weight label predict features
10.149310 10.149310 1 1.0 unknown 0.0000 732
10.369817 10.590324 2 2.0 unknown 0.0000 27
10.325926 10.282035 4 4.0 unknown 0.0000 53
10.401768 10.477609 8 8.0 unknown 0.0000 60
10.356288 10.310808 16 16.0 unknown 0.0000 26
10.472953 10.589619 32 32.0 unknown 0.0000 125
10.474859 10.476765 64 64.0 unknown 0.0000 313
10.425314 10.375768 128 128.0 unknown 0.0000 50
10.005560 9.585807 256 256.0 unknown 0.0000 33
finished run
number of examples = 256
weighted example sum = 256.000000
weighted label sum = 0.000000
average loss = 10.005560
total feature number = 22158
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