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pmml

InvalidFeatureException in jpmml while trying to load in java

my pmml file link. generated by R-Tool

pmml file on google drive

here is my java code..

PMML model = null;
    File inputFilePath = new File("/home/equation/iris_rf.pmml");
    try (InputStream is = new FileInputStream(inputFilePath)) {
        model = org.jpmml.model.PMMLUtil.unmarshal(is);
    } catch (Exception e) {
        throw e;
    }

    // construct a tree predictor based on the PMML
    ModelEvaluator<TreeModel> modelEvaluator = new TreeModelEvaluator(model);
    System.out.println(modelEvaluator.getSummary());

exception --- 

Exception in thread "main" org.jpmml.evaluator.InvalidFeatureException: PMML
at org.jpmml.evaluator.ModelEvaluator.selectModel(ModelEvaluator.java:528)
at org.jpmml.evaluator.tree.TreeModelEvaluator.<init>(TreeModelEvaluator.java:64)
at com.girnarsoft.Pmml.main(Pmml.java:24)

any idea? why getting this error ?

Solution

  • You must instantiate org.jpmml.evaluator.ModelEvaluator subclass that matches the top-level Model element of your PMML file.

    Currently, you're instantiating org.jpmml.evaluator.tree.TreeModelEvaluator, which corresponds to the TreeModel element. However, you should be instantiating org.jpmml.evaluator.mining.MiningModelEvaluator instead, as the top-level Model element in your PMML file is the MiningModel element.

    In general, you should construct ModelEvaluator instances using the ModelEvaluatorFactory#newModelEvaluator(PMML) factory method.