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actionml / universal-recommender

Highly configurable recommender based on PredictionIO and Mahout's Correlated Cross-Occurrence algorithm
http://actionml.com/universal-recommender
Apache License 2.0
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ArrayIndexOutOfBoundsException: 0 #31

Closed jbman223 closed 7 years ago

jbman223 commented 7 years ago

When attempting to train the engine, I get to this error. I have tried many different PIO installations, and all result in this error. I am sure there is some simple mistake I am making, but any guidance would be appreciated. I am using PIO 0.11.0 and UR 0.6.0.

[INFO] [Engine$] EngineWorkflow.train
[INFO] [Engine$] DataSource: com.actionml.DataSource@d36c1c3
[INFO] [Engine$] Preparator: com.actionml.Preparator@437281c5
[INFO] [Engine$] AlgorithmList: List(com.actionml.URAlgorithm@27da994b)
[INFO] [Engine$] Data sanity check is on.
[WARN] [TableInputFormatBase] Cannot resolve the host name for ACPIOTest/127.0.1.1 because of javax.naming.NameNotFoundException: DNS name not found [response code 3]; remaining name '1.1.0.127.in-addr.arpa'
[INFO] [DataSource] Received events List()
[WARN] [TableInputFormatBase] Cannot resolve the host name for ACPIOTest/127.0.1.1 because of javax.naming.NameNotFoundException: DNS name not found [response code 3]; remaining name '1.1.0.127.in-addr.arpa'
[INFO] [Engine$] com.actionml.TrainingData does not support data sanity check. Skipping check.
[INFO] [Engine$] com.actionml.PreparedData does not support data sanity check. Skipping check.
[INFO] [URAlgorithm] Actions read now creating correlators
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0
        at org.apache.mahout.math.cf.SimilarityAnalysis$.cooccurrencesIDSs(SimilarityAnalysis.scala:145)
        at com.actionml.URAlgorithm.calcAll(URAlgorithm.scala:311)
        at com.actionml.URAlgorithm.train(URAlgorithm.scala:285)
        at com.actionml.URAlgorithm.train(URAlgorithm.scala:175)
        at org.apache.predictionio.controller.P2LAlgorithm.trainBase(P2LAlgorithm.scala:49)
        at org.apache.predictionio.controller.Engine$$anonfun$18.apply(Engine.scala:692)
        at org.apache.predictionio.controller.Engine$$anonfun$18.apply(Engine.scala:692)
        at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
        at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
        at scala.collection.immutable.List.foreach(List.scala:318)
        at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
        at scala.collection.AbstractTraversable.map(Traversable.scala:105)
        at org.apache.predictionio.controller.Engine$.train(Engine.scala:692)
        at org.apache.predictionio.controller.Engine.train(Engine.scala:177)
        at org.apache.predictionio.workflow.CoreWorkflow$.runTrain(CoreWorkflow.scala:67)
        at org.apache.predictionio.workflow.CreateWorkflow$.main(CreateWorkflow.scala:250)
        at org.apache.predictionio.workflow.CreateWorkflow.main(CreateWorkflow.scala)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:731)
        at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:181)
        at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:206)
        at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:121)
        at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
pferrel commented 7 years ago

This is because you have no data for some of your events.

Please address questions to the Google Group: https://groups.google.com/forum/#!forum/actionml-user

Can you share your engine.json and events that match each of the "eventNames" in the engine.json.