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https://issues.apache.org/jira/browse/FLINK-4886?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Lim Chee Hau closed FLINK-4886.
-------------------------------
Resolution: Duplicate
> Example in Machine Learning Quickstart Guide causes error
> ---------------------------------------------------------
>
> Key: FLINK-4886
> URL: https://issues.apache.org/jira/browse/FLINK-4886
> Project: Flink
> Issue Type: Bug
> Components: Documentation
> Reporter: Lim Chee Hau
> Priority: Minor
>
> Under *Loading Data/LibSVM* files section, loading test data with below line
> will causes error when execute prediction method *svm.predict(astroTest)*:
> {code}
> val astroTest: DataSet[LabeledVector] =
> MLUtils.readLibSVM("/path/to/svmguide1.t")
> {code}
> Error will be looks like:
> {noformat}
> Exception in thread "main" java.lang.RuntimeException: There is no
> PredictOperation defined for org.apache.flink.ml.classification.SVM which
> takes a DataSet[org.apache.flink.ml.common.LabeledVector] as input.
> at
> org.apache.flink.ml.pipeline.Estimator$$anon$1.predictDataSet(Estimator.scala:113)
> at
> org.apache.flink.ml.pipeline.Predictor$class.predict(Predictor.scala:59)
> at org.apache.flink.ml.classification.SVM.predict(SVM.scala:131)
> at org.apache.flink.quickstart.BatchJob$.main(BatchJob.scala:116)
> at org.apache.flink.quickstart.BatchJob.main(BatchJob.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:497)
> at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
> {noformat}
> Because *predict* method expects *DataSet\[Vector\]* instead of
> *DataSet\[LabeledVector\]*, loading test data with below line will solve the
> problem:
> {code}
> val astroTest: DataSet[Vector] =
> MLUtils.readLibSVM("/path/to/svmguide1.t").map(_.vector)
> {code}
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