"PCA SEVERE: java.lang.ArrayIndexOutOfBoundsException"

macctenmaccten Member Posts: 28 Contributor II
edited June 2019 in Help

I am using rapid miner to try and predict several numeric labels based on numeric attributes.
The dataset has a high deminsionality with many attributes
The attributes are highly correalated so im using a PCA operator to create uncorrealated components. The result of which are fed into a Regression operator to see if it is more effective than using just the regression operator on its own

The issue arises when i change the label. For the example below, the PCA operator works perfectly well when setting the role of Attr1 to label
However when i change the label to Attr2 i get an error SEVERE: java.lang.ArrayIndexOutOfBoundsException

Role Name Type Stats                        Range                 Missing Values
regular Attr1 real         avg = 69.584 +/- 20.640 [0.000 ; 100.000] 0.0
regular Attr2 real         avg = 63.434 +/- 18.475 [0.000 ; 97.143] 0.0

Im new to rapidminer so any help would be greatly appreciated



  • Options
    MariusHelfMariusHelf RapidMiner Certified Expert, Member Posts: 1,869 Unicorn

    can you please post your process setup as described here? If your data is not confidential, it would also be helpful if you could create a bug at http://bugs.rapid-i.com and attach the data (beware, the data will be publicly downloadable from the internet). If the data is too confidential for the internet but public enough for a mail, you could mail me the data for investigation. In that case I can send you my mail address via forum PM.

    Best, Marius
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