How to calculate Correlation value on Auto Model?

Answers

• sgenzer Administrator, Moderator, Employee, RapidMiner Certified Analyst, Community Manager, Member, University Professor, PM Moderator Posts: 2,959 Community Manager

  February 2019

  hi @angelotheus I believe it is standard Pearson correlation coefficient ("r") that is used. Nothing fancy.
  
  Scott
  
  

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• angelotheus Member Posts: 4 Newbie

  February 2019

  How can I use rapidminer operator to produce the value?

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• sgenzer Administrator, Moderator, Employee, RapidMiner Certified Analyst, Community Manager, Member, University Professor, PM Moderator Posts: 2,959 Community Manager

  February 2019

  just use the "correlation matrix" operator

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• angelotheus Member Posts: 4 Newbie

  February 2019

  Yes, if use correlation matrix operator will give us the number. However, I would like to know how to calculate the number?

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• kypexin Moderator, RapidMiner Certified Analyst, Member Posts: 291 Unicorn

  February 2019

  Hi @angelotheus
  
  There are pretty many online resources explaining that topic, like:  
  
  https://study.com/academy/lesson/pearson-correlation-coefficient-formula-example-significance.html
  https://www.thoughtco.com/how-to-calculate-the-correlation-coefficient-3126228
  
   

  -- 
  Vladimir
  http://whatthefraud.wtf
  

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• MartinLiebig Administrator, Moderator, Employee, RapidMiner Certified Analyst, RapidMiner Certified Expert, University Professor Posts: 3,507 RM Data Scientist

  February 2019

  And to add here,
  

  the executed code is available here: https://github.com/rapidminer/rapidminer-studio/blob/master/src/main/java/com/rapidminer/tools/math/MathFunctions.java line 194 following.

  BR,

  Martin
  

  
  

  - Sr. Director Data Solutions, Altair RapidMiner -
  Dortmund, Germany

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