CHAID relevance criterion

franaf
franaf New Altair Community Member
edited November 5 in Community Q&A
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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Answers

  • land
    land New Altair Community Member
    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
    franaf New Altair Community Member
    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
    dragoljub New Altair Community Member
    I get this same error. According to the operator formation it should be able to support numerical attributes.

    -Gagi
  • land
    land New Altair Community Member
    Hi,
    that's only an erroneous entry. We have removed that in the meanwhile. Sorry for the inconvenience.

    Greetings,
      Sebastian
  • franaf
    franaf New Altair Community Member
    Well, Sebastian.
    I've downloaded 005. Problem persists. Can't handle numerical values with CHAID.
  • land
    land New Altair Community Member
    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
    franaf New Altair Community Member
    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

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