Simon Dugas created SAMOA-26:
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Summary: VHT throws NumberFormatException on class attribute
Key: SAMOA-26
URL: https://issues.apache.org/jira/browse/SAMOA-26
Project: SAMOA
Issue Type: Bug
Components: SAMOA-Local
Environment: MAC OSX 10.10.3
java version "1.7.0_71"
Java(TM) SE Runtime Environment (build 1.7.0_71-b14)
Java HotSpot(TM) 64-Bit Server VM (build 24.71-b01, mixed mode)
Reporter: Simon Dugas
I'm trying to debug the following error, PrequentialEvaluation with VHT
(classification) throws a NumberFormatException for the class attribute. Why is
it trying to parse the class attribute as an integer? I can't find a format
error in my ARFF file. It was created with weka.core.converters.CSVLoader.
Other datasets (nominal only) work fine with my install of SAMOA. This
configuration runs fine in MOA.
Command Line Argument
bin/samoa local target/SAMOA-Local-0.3.0-SNAPSHOT.jar "PrequentialEvaluation -l
com.yahoo.labs.samoa.learners.classifiers.trees.VerticalHoeffdingTree -s
(ArffFileStream -f test.arff) -f 1"
ARFF File
@relation test.txt
@attribute Dur numeric
@attribute Proto
{udp,tcp,icmp,arp,ipx/spx,ipv6-icmp,pim,esp,igmp,rtcp,rtp,ipv6,udt}
@attribute Dir {' <->',' <?>',' ->',' ?>',' who',' <-',' <?'}
@attribute State {CON,PA_PA,PA_FRA, ...}
@attribute sTos numeric
@attribute dTos numeric
@attribute TotPkts numeric
@attribute TotBytes numeric
@attribute SrcBytes numeric
@attribute class {Background,Normal,Botnet}
@data
1065.731934,udp,' <->',CON,0,0,2,252,145,Background
1471.787109,udp,' <->',CON,0,0,2,252,145,Background
...
Error Output
Command line string = PrequentialEvaluation -l
com.yahoo.labs.samoa.learners.classifiers.trees.VerticalHoeffdingTree -s
(ArffFileStream -f test.arff) -f 1
2015-04-23 12:05:45,277 [main] INFO com.yahoo.labs.samoa.LocalDoTask
(LocalDoTask.java:80) - Successfully instantiating
com.yahoo.labs.samoa.tasks.PrequentialEvaluation
Exception in thread "main" java.lang.NumberFormatException: For input string:
"Background"
at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1250)
at java.lang.Double.valueOf(Double.java:504)
at
com.yahoo.labs.samoa.instances.ArffLoader.readInstanceDense(ArffLoader.java:105)
at com.yahoo.labs.samoa.instances.ArffLoader.readInstance(ArffLoader.java:77)
at com.yahoo.labs.samoa.instances.Instances.readInstance(Instances.java:182)
at
com.yahoo.labs.samoa.moa.streams.ArffFileStream.getNextInstanceFromFile(ArffFileStream.java:183)
at
com.yahoo.labs.samoa.moa.streams.ArffFileStream.readNextInstanceFromFile(ArffFileStream.java:145)
at
com.yahoo.labs.samoa.moa.streams.ArffFileStream.nextInstance(ArffFileStream.java:118)
at
com.yahoo.labs.samoa.moa.streams.ArffFileStream.nextInstance(ArffFileStream.java:46)
at com.yahoo.labs.samoa.streams.StreamSource.nextInstance(StreamSource.java:70)
at
com.yahoo.labs.samoa.streams.PrequentialSourceProcessor.initStreamSource(PrequentialSourceProcessor.java:197)
at
com.yahoo.labs.samoa.streams.PrequentialSourceProcessor.getDataset(PrequentialSourceProcessor.java:170)
at
com.yahoo.labs.samoa.tasks.PrequentialEvaluation.init(PrequentialEvaluation.java:161)
at com.yahoo.labs.samoa.LocalDoTask.main(LocalDoTask.java:87)
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