Hi, Is it possible to calculate a correlation between string and numeric variables in Knime? I tried the Linear Correlation node, but it only calculates string - string and numeric - numeric correlations; string - numeric variable pair correlations come out as “?” in the correlation matrix. Thanks!

Hi Filipa & welcome to the KNIME community forum Is there any known correlation metric in particular berween strings and numbers you have in mind ? Maybe you have already used such kind of metric in another data mining tool but it is not available in Knime ? If so, could you please provide its name to better understand what exactly you need to achieve ? Thanks in advance. Best Ael

Hello, I did non use such a metric before. I want to predict if a hotel booking reservation is canceled (dummy variable). My data set has a high number of predictors (categorical and numeric), so it would be very useful to get some sort of association measure between my target and the features before testing an algorithm

Hi @filipa_marques see: [image] Feature Importance using decision tree KNIME Analytics Platform Hi @sschacht Maybe the Information Gain Calculator helps you to give some insights about the feature importance. gr. Hans gr. Hans

Correlation between string and numeric variables

KNIME Analytics Platform

HansS November 13, 2022, 3:56pm 4

Hi @filipa_marques

see:

gr. Hans