Q1.
In the result, the Null cost value is too close to the total cost value.
How to increase Null cost value ?

Q2.
If the config value > 17, how to decrease the config value ?

Q3.
In some reference papers, they have calculated correlation value for the testing set using Catalyst.
But, I don't know how to calculate correlation in DiscoveryStudio.
So the first one question is how to calculate the correlation value for the testing set in DiscovreyStudio and
another one question is could you please give me the correlation formula you used in DiscoveryStudio?

Thank you for your kindly help!