Low Variance Filter

This Node Is Deprecated — This version of the node has been replaced with a new and improved version. The old version is kept for backwards-compatibility, but for all new workflows we suggest to use the version linked below.
Go to Suggested ReplacementLow Variance Filter

Filters out double-compatible columns, whose variance is below a user defined threshold. Columns with low variance are likely to distract certain learning algorithms (in particular those which are distance based) and are therefore better removed.

Note, the input table should not be normalized.


Variance Upper Bound
Choose a variance value here. The higher the value, the more columns are likely to get filtered out. Choose 0 to filter for columns, which only contain one constant value.
Column Filter
Only columns in the "include" list will be considered for filtering. Any other column will be left untouched (i.e. will also be present in the output table independent of their variance).

Input Ports

Numeric input data. (Non-numeric columns will be left untouched.)

Output Ports

Filtered data.

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