---
name: "svm-scale"
section: "1"
platform: "linux"
package: "libsvm-tools"
version: "3.24+ds-6.1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/svm-scale"
---

# svm-scale(1)

scale data to a restricted range as preprocessing for SVM training

## NAME

svm-scale - scale data to a restricted range as preprocessing for SVM training

## SYNOPSIS

**svm-scale \[ -l** *lower* **\] \[ -u** *upper* **\] \[ -y** *y\_upper* **\] \[ -s** *save\_filename* **\] \[ -r** *restore\_filename \]* *datafilename*

## DESCRIPTION

**svm-scale** reads the given *datafilename* (a training or testing data file as specified in **svm\_train(1)** or **svm\_predict(1)** ) and scales all dimensions to the given ranges.

## OPTIONS

- \-l lower

  *lower* is the lowest (minimal) value allowed in each dimension.  It defaults to -1.

- \-u upper

  *upper* is the highest (maximal) value allowed in each dimension.  It defaults to 1.

- \-y y\_lower

  *y\_lower* is a boolean value (0 or 1) indicating whether or not y-values (targets) should be scaled.  It defaults to 0.

- \-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.

## FILES

*datafilename* must be a training or testing dataset.

## ENVIRONMENT

No environment variables.

## DIAGNOSTICS

None documented; see Vapnik et al.

## BUGS

Please report bugs to the Debian BTS.

## AUTHOR

Chih-Chung Chang, Chih-Jen Lin \<cjlin@csie.ntu.edu.tw\>, Chen-Tse Tsai \<ctse.tsai@gmail.com\> (packaging)

## SEE ALSO

[**svm-train**(1)](/svm-train/1.md), [**svm-predict**(1)](/svm-predict/1.md)