Hello!
I am trying to run LibSVM (weka 3.7), but the predictor shows ERROR Weka Predictor (3.7) Execute failed: java.lang.NullPointerException.
Can anyone help me with this, please?
Hello!
I am trying to run LibSVM (weka 3.7), but the predictor shows ERROR Weka Predictor (3.7) Execute failed: java.lang.NullPointerException.
Can anyone help me with this, please?
Hi @mantunes,
can you please post you KNIME.log file? This should tell us more about the error. You can find it under View -> Open KNIME Log
.
best,
Gabriel
I have experienced that the Weka nodes really do need a lot of memory and especially SVM models are very hungry for it. Besides just using a stronger machine you can try these things:
Unfortunately my experience is that Weka und especially SVM really do need a lot of power which cannot be easily substituted.
In general check the performance tips on this page:
https://www.knime.com/blog/optimizing-knime-workflows-for-performance
Hi!
I tryed just a small partition of the data and it worked! Thanks for your help!
Hi there!
Glad it worked with a smaller partition of data. Anyways this is reported and will be checked
Br,
Ivan
Hi there!
We couldn’t reproduce your issue. Can you maybe share a workflow where we could experience this issue?
Br,
Ivan