Problem with parameter optimization (minChildSize, Random Forest)

Dear all,

I would like to use optimize parameters with the “Parameter Optimization Loop nodes” for a rando forest model.

Parameters to be optimized:

• Number of Trees (numTrees):

• Start vakue: 200

• Stop value: 350

• Step size: 50

• Tree Depth (maxDepth):

• Start value : 10

• Stop value: 18

• Step size: 4

• Minimum Node Size (minNodeSize):

• Start value: 10

• Stop value: 30

• Step size: 10

• Minimum Child Size (minChildSize):

• Start value: 5

• Stop value: 15

• Step size: 5

Unfortunately, I always get the same error message: “Invalid minimum child size (10); must be at most 2 x minimum node size (10)”. I have tried countless other combination. The error remains.

Can anyone help me out?

Best regards,

DA