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unable to load attributes using AttributeConstructionLoader

Hi,

I have a problem with loading my attributes using the AttributeConstructionLoader. Firstly, I generated my attributes in another rapidminer file using genetic algorithm and i used the AttributeConstructionWriter to write all the attributes in an *.att file. I checked the file, it has 19 attributes.

Then I opened a new rapidminer file. I used CSVExampleSource to load my dataset (the same one I used for generating attributes; I used the same dataset because I was just trying out...), then I placed the AttributeConstructionLoader under root and selected my attribute file to load. When I run the process, the outcome was that there were no attributes left.

Does anyone have any idea what might have went wrong?

Thanks

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IngoRM

Hello,

the operator AttributeConstructionLoader has a parameter called "keep_all". Did you try to activate it?

The sample processes "05_Features/19_YAGGA.xml" and "05_Features/20_YAGGAResultAttributeSetting.xml" should demonstrate how the AttributeConstructionLoader can be used.

Cheers,
Ingo

Legacy User

Hi,

Thanks for your advice. From the examples I have found AttributesWeightWriter and AttributeWeightsLoader to be useful for my purpose.

I am not sure how the AttributesConstructionLoader works, it seems that if I simply used the AttributesConstructionWriter to write the attributes, and when I load them, there would be no attributes left, and if keep all == true, all the attributes would remain, so in the end I cannot only retain the attributes I want.

Thanks

IngoRM

Yes, that is true. The AttributeConstruction... operators are only for constructions, not for feature selection. For this purpose, the AttributeWeights... operators have to be used.

Cheers,
Ingo