How to find error between predicted and actual data ?
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I have trained a model using GPR and want to see error between predicted and actual data.
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Use predict(grpModel, x) to get the predicted response. x should be the x values of your training data. Then just subtract the predicted results from the y-values from your training data.
This page of the documentation has a demo. Search for "Compute the regression error on the test data."
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