尝试在 java 中加载时 jpmml 中的 InvalidFeatureException

InvalidFeatureException in jpmml while trying to load in java

我的 pmml 文件 link。由 R-Tool 生成

pmml file on google drive

这是我的 java 代码..

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());

异常 ---

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)

有什么想法吗?为什么会出现此错误?

您必须实例化 org.jpmml.evaluator.ModelEvaluator 个与您的 PMML 文件的顶级模型元素相匹配的子类。

目前,您正在实例化 org.jpmml.evaluator.tree.TreeModelEvaluator,它对应于 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

一般来说,您应该使用 ModelEvaluatorFactory#newModelEvaluator(PMML) 工厂方法构造 ModelEvaluator 个实例。