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CHAID relevance criterion

Hi, I'm interesting in using CHAID as operator in a process but when I start it, it gives an error message: "No relevance criterion defined". I couldn't find where where the problem is.
Thank you for your help.

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land

Hi,
which version of RapidMiner are you using? In the most current version I cannot reproduce this problem easily.
If you are using version 5.0.003, please build a process where you use only data generators and that still reproduces the problem. If you could post it here, I would be able to find the bug if it still exists.

Greetings,
Sebastian

franaf

Hi, thank you for answering.
I've installed 5.0.003 and now it's reporting another error. It says "numerical attributes not supported". I've used "Generate Up-selling Data" as automatic data generator and the problem persists. I've logged the process with logverbosity = "all". The results are here:

Mar 4, 2010 11:58:06 AM com.rapidminer.Process prepareRun
FINE: Initialising process setup.
Mar 4, 2010 11:58:06 AM com.rapidminer.tools.WrapperLoggingHandler log
INFO: No filename given for result file, using stdout for logging results!
Mar 4, 2010 11:58:06 AM com.rapidminer.Process prepareRun
FINE: Process initialised.
Mar 4, 2010 11:58:06 AM com.rapidminer.Process loadInitialData
INFO: Loading initial data.
Mar 4, 2010 11:58:06 AM com.rapidminer.Process loadInitialData
FINE: Input #1 not specified.
Mar 4, 2010 11:58:06 AM com.rapidminer.Process run
INFO: Process starts
Mar 4, 2010 11:58:06 AM com.rapidminer.Process run
FINE: Process:
Process[1] (Process)
subprocess 'Main Process'
+- Generate Up-Selling Data[1] (Generate Up-Selling Data)
+- CHAID[1] (CHAID)
Mar 4, 2010 11:58:06 AM com.rapidminer.operator.Operator execute
FINE: Starting application 1 of operator Process
Mar 4, 2010 11:58:06 AM com.rapidminer.operator.Operator execute
FINER: Process called 1st time with input:
Mar 4, 2010 11:58:06 AM com.rapidminer.operator.execution.SimpleUnitExecutor execute
FINE: Executing subprocess Process.Main Process. Execution order is: [Generate Up-Selling Data (Generate Up-Selling Data), CHAID (CHAID)]
Mar 4, 2010 11:58:06 AM com.rapidminer.operator.Operator execute
FINE: Starting application 1 of operator Generate Up-Selling Data
Mar 4, 2010 11:58:06 AM com.rapidminer.operator.Operator execute
FINER: Generate Up-Selling Data called 1st time with input:
Mar 4, 2010 11:58:06 AM com.rapidminer.operator.Operator execute
FINE: Completed application 1 of operator Generate Up-Selling Data
Mar 4, 2010 11:58:06 AM com.rapidminer.operator.Operator execute
FINER: Generate Up-Selling Data returned with output:
outputSimpleExampleSet:
100 examples,
8 regular attributes,
special attributes = {
label = #8: label (nominal/single_value)/values=[product_1, product_2, product_3]
}
Mar 4, 2010 11:58:06 AM com.rapidminer.operator.Operator execute
FINEST: Generate Up-Selling Data: execution time was 2 ms
Mar 4, 2010 11:58:06 AM com.rapidminer.operator.Operator execute
FINE: Starting application 1 of operator CHAID
Mar 4, 2010 11:58:06 AM com.rapidminer.operator.Operator execute
FINER: CHAID called 1st time with input:
training setSimpleExampleSet:
100 examples,
8 regular attributes,
special attributes = {
label = #8: label (nominal/single_value)/values=[product_1, product_2, product_3]
}
Mar 4, 2010 11:58:06 AM com.rapidminer.operator.learner.tree.CHAIDLearner$1 getNominalBenefit
INFO: Calc benefit for: SimpleExampleSet:
100 examples,
1 regular attributes,
special attributes = {
label = #8: label (nominal/single_value)/values=[product_1, product_2, product_3]
}
Mar 4, 2010 11:58:06 AM com.rapidminer.operator.learner.tree.CHAIDLearner$1 getNominalBenefit
INFO: Weights are: AttributeWeights (containing weights for 1 attributes)
Mar 4, 2010 11:58:06 AM com.rapidminer.operator.learner.tree.CHAIDLearner$1 getNominalBenefit
INFO: W(name)=1.0

Thank you very much

dragoljub

I get this same error. According to the operator formation it should be able to support numerical attributes.

-Gagi

land

Hi,
that's only an erroneous entry. We have removed that in the meanwhile. Sorry for the inconvenience.

Greetings,
Sebastian

franaf

Well, Sebastian.
I've downloaded 005. Problem persists. Can't handle numerical values with CHAID.

land

Hi,
I think you misunderstood my solution: Chaid simply does not support numerical attributes, so I removed the erroneous entry that it does! The description of it's behavior was changed, not the behavior itself.

Greetings,
Sebastian

franaf

Sebastian Land wrote:

Hi,
I think you misunderstood my solution: Chaid simply does not support numerical attributes, so I removed the erroneous entry that it does! The description of it's behavior was changed, not the behavior itself.

Greetings,
Sebastian

OK. Other implementations of CHAID does.
Thank you