Feature selection / Dimensionality reduction for tall array

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Santiago Cepeda 2021-10-22

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评论： Santiago Cepeda 2021-10-29

Hi everyone!

I work with a tall array of more than 2 M observations and about 3000 numerical predictor variables. My response variable is binary (no / yes). I would like to know how and what algorithms I can use to select (or rank) the best features to develop a predictive model.

Thanks.

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Kumar Pallav 2021-10-29

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Hi,

Please look at the various feature selection techniques available in Statistics and Machine Learning Toolbox. As an example, you can use fscmrmr function for classification problems. Alternatively, you can use pca to reduce the dimensionality of the feature space.

Hope this helps!