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Explain Prediction inside Cross Validation : Error

User: "varunm1"
New Altair Community Member
Updated by Jocelyn
Hello,

I am working on a process that needs explain prediction operator inside the testing process of a cross-validation operator. I use forward feature selection method inside cross-validation (training) that selects relevant features that support predictions, but when I provide those as input to the "tra" port of explain predictions and the "tes" of cross-validation to "tes" of explain predictions operator it is throwing an error. 

I am looking to select attributes given by forward selection and apply the same attributes to the testing port of explain predictions as well so that it doesn't throw an error. Currently, all the features are going into the testing port of explain predictions but not into the training port as training is done on feature selected attributes.

The process is working fine in the absence of explain predictions. I attached data .ioo files which can be placed in the repository directly and process in this thread.

I worked with the same process using the automatic feature engineering operator and didn't face any issue, my understanding is that automatic feature engineering gives features instead of feature selected example set like forwarding selection. In that, I just used apply feature set operator to make train and test data going into the explain predictions operator have the same attributes.



@IngoRM

Thanks for your suggestions.
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    User: "IngoRM"
    New Altair Community Member
    Accepted Answer
    Hi,
    Another idea to use the "weights" produced by the feature selection and deliver them to the through port.  In the testing part you could then use the operator "Select by Weights" to replicate the same attribute set.
    Hope this helps,
    Ingo