lnxdivmedianx

Apply the transformation ln(x/median(x)). Replace the target column with the new values on the first port. The second port extract the median of the column to apply the reverse operation expxmumedianx node on new datas. Usually used to predict better very constrasted variables with peaks, in a model (for example linear regression). Apply the lnxdivmedianx node using the extracted median from the lnxdivmedianx to express your result in the orginal scale.

Options

column selection: select column to transform

Input Ports

: Table with at least a numeric column

Output Ports

: Table with target variable transformed
: Median of the target column

Nodes

String Manipulation (Variable)3 ×
Math Formula2 ×
Column Filter1 ×
Column Rename1 ×
Column Selection Configuration1 ×
Show all 9 nodes

Extensions

FeatureKNIME Base nodes
FeatureKNIME Javasnippet
FeatureKNIME Math Expression (JEP)
FeatureKNIME Quick Forms