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Grid optimization, results not optimal?
Unicornhi,
I am doing a grid optimization with W-J48 Decision tree inside a cross validation, to find best accuracy and parameters...
however, in my Log File, I see accuracy was already about 0.857, whereas in the results performance, I get other values and parameters, and accuracy is not optimal, its only about 76% ... why is this ? Why does it not show the optimal 85.7 % accuracy that was logged?
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Best Answer
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MartinLiebig
Administrator, Moderator, Employee-RapidMiner, RapidMiner Certified Analyst, RapidMiner Certified Expert, University Professor Posts: 3,533 
RM Data Scientist
Have you had a chance to review my answer to your last question? http://community.rapidminer.com/t5/RapidMiner-Studio/different-validation-performance-parameters-in-LOG/m-p/32092#M22911
i think it includes the most propable answer.
- Sr. Director Data Solutions, Altair RapidMiner -
Dortmund, Germany0
Answers
ok thanks, I will continue in the other thread, missed that somehow..