How to use the outputs of the Stepwise function?

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John Doe
John Doe 2011-12-22
Hello, I am classifying P300 responses using matlab and all the papers recommed Stepwise Linear Discriminant Analysis. I have inputted training data using Stepwise(X,y) and gotten a result with a high R-square value, but when I hit export I don't know what variables I need and how I would apply them to new data to classify it.

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Richard Willey
Richard Willey 2011-12-22
Hi John
The stepwise function in Statistics Toolbox is used for liner regression.
If you want to use a stepwise type algorithm with linear discriminant analysis your best option is to wrap the sequentialfs function around "classify" (Classify implement linear discriminant analysis).
sequentialfs will output a mask that you can use to indicate which variables should/should not be included in your final model.

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