I have attempted to add this call to a RandomForestModel in order to obtain
accuracy:
*double accuracy = Evaluator.evaluate(
dataCache,
randomForestMdl,
vectorizer,
new Accuracy<>()
);
System.out.println("\n>>> Accuracy " + accuracy);
System.out.println("\n>>> Test Error " + (1 - accuracy));*
But I get this exception (editted to remove extra detail). Am I using the
wrong parameters?
Exception in thread "main" java.lang.RuntimeException: class
/org.apache.ignite.ml.math.exceptions.IndexException: Invalid (out of bound)
index: 16
at
org.apache.ignite.ml.selection.scoring.evaluator.Evaluator.calculateMetric(Evaluator.java:330)
at
org.apache.ignite.ml.selection.scoring.evaluator.Evaluator.evaluate(Evaluator.java:57)
at com.gg.TrainRandomForest2.main(TrainRandomForest2.java:111)
Caused by: class org.apache.ignite.ml.math.exceptions.IndexException:
Invalid (out of bound) index: 16
at
org.apache.ignite.ml.math.primitives.vector.AbstractVector.checkIndex(AbstractVector.java:174)
at
org.apache.ignite.ml.math.primitives.vector.AbstractVector.get(AbstractVector.java:179)
at
org.apache.ignite.ml.tree.randomforest.data.TreeNode.predict(TreeNode.java:91)
at
org.apache.ignite.ml.tree.randomforest.data.TreeNode.predict(TreeNode.java:92)
at
org.apache.ignite.ml.tree.randomforest.data.TreeRoot.predict(TreeRoot.java:52)
at
org.apache.ignite.ml.tree.randomforest.data.TreeRoot.predict(TreeRoot.java:29)
at
org.apache.ignite.ml.composition.ModelsComposition.predict(ModelsComposition.java:64)
at
org.apache.ignite.ml.composition.ModelsComposition.predict(ModelsComposition.java:32)
at
org.apache.ignite.ml.selection.scoring.cursor.CacheBasedLabelPairCursor$TruthWithPredictionIterator.next(CacheBasedLabelPairCursor.java:145)
at
org.apache.ignite.ml.selection.scoring.cursor.CacheBasedLabelPairCursor$TruthWithPredictionIterator.next(CacheBasedLabelPairCursor.java:121)
at
org.apache.ignite.ml.selection.scoring.metric.classification.Accuracy.score(Accuracy.java:36)
at
org.apache.ignite.ml.selection.scoring.evaluator.Evaluator.calculateMetric(Evaluator.java:328)
... 2 more
/
--
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