Is data standardization and scaling unnecessary with Splunk and the Machine Learning Toolkit?

[takaakinakajima]

I use Machine Learning Toolkit 2.0.0 with Splunk Enterprise 6.5, and found implementations of algorithms in
SPLUNK_HOME/etc/apps/Splunk_ML_Toolkit/bin/algos

Only SGDClassifier, SGDRegressor, and SpectralClustering algorithms,
data will be scaled with StandardScaler before calculation.
It seems that the other algorithms (e.g. LenearRegression) do not scale data.

Is scaling unnecessary with Splunk/Machine Learning Toolkit?
If required, how do we standardize data before calculation?

Scikit-learn notes "Standardization of datasets is a common requirement for many machine learning estimators".
http://scikit-learn.org/stable/modules/preprocessing.html

[grana_splunk · Accepted solution]

Simply use StandardScaler, if you want to scale your data

For example: ,... | fit StandardScaler ... | fit LinearRegression ...

[takaakinakajima]

Hi grana.

Thank you for your shrewd advice.
That's just the thing!!