"Support Vector Machine (Evolutionary) only predicting true outcomes"

Eric005

Just curious why this is the case, using a SVM on a sliding window time series validation for a binary indication and the SVM is only providing a true estimate.  Is this becuase the SVM estimates the 1 of 2 cases (true or not true) instead of postively true or postively false?  Is there a workaround?  Thanks!

 

 

MartinLiebig

Hey,

 

are you sure that your windows are not sometimes completly one class or highly skewed?

 

Best,

Martin