I have a process where I am using GridParameterOptimization, where I intend to test a list of 5 or so values. However, while I am developing the rest of the process, I want to have a single value in the list, to make sure the process runs successfully all the way through. However, RapidMiner gives me an error when I try to run the process without multiple values to test:
Error in: GridParameterOptimization
No parameters were specified which should be optimized
You need to specify parameters of inner operators in order to allow the ParameterOptimization operation for optimization.
I realize this is a special case, as there is really no "optimizing" going on with only one value to test, but it seems like RM should execute the process with the single value, which obviously is chosen as "optimal". Giving an error instead of a warning seems like an overreaction. Am I missing something?
To be clear, this code fragment works:
<operator name="GridParameterOptimization" class="GridParameterOptimization" expanded="yes">
<list key="parameters">
<parameter key="W-LWL.K" value="1000,10,100"/>
</list>
This one does not:
<operator name="GridParameterOptimization" class="GridParameterOptimization" expanded="yes">
<list key="parameters">
<parameter key="W-LWL.K" value="1000"/>
</list>
Is this something fixable, or is there a reason I'm not aware of that explains this behavior?
Thanks,
Keith
