Public bug reported:
Binary package hint: libsvm-tools
The manpage to svm-scale contains the following lines which explain the
-s and -r options:
-s save_filename
save_filename indicates the filename to save the scaled data to.
-r restore_filename
restore_filename indicates the filename reserved to hold the
original (unscaled) data in case there is a need to restore.
In reality, the scaled data is written to STDOUT, and the range information for
each feature is written to save_filename.
This range information can then be used in order to use the same scaling
function for a different data set (typically the test data), which is done with
the -r parameter.
For example:
svm-scale -l 0 -u 1 -s range training.data > training.data_scaled
svm-scale -l 0 -u 1 -r range test.data > test.data_scaled
To fix this issue, I suggest to add the sentence
"The scaled data is written to STDOUT." to the section DESCRIPTION
and replace the option descriptions above by
-s save_filename
save_filename indicates the filename to save the scaling
parameters to.
-r restore_filename
restore_filename indicates the filename reserved to hold the
scaling parameters in case there is a need to use this information
to perform the same scaling operation on a similar dataset.
Best regards,
Zeno
** Affects: libsvm (Ubuntu)
Importance: Undecided
Status: New
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svm-scale manpage contains misleading information
https://bugs.launchpad.net/bugs/278166
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