Feature Selection And Engineering | Machine Learning

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easyFeature Selection And Engineering

A filter method (chi-squared test) is used to select the top 20 features from 100. A wrapper method (recursive feature elimination with cross-validation) is also run on the same dataset. The wrapper method achieves 4% higher test accuracy but takes 50× longer. A team lead asks: "which should we use in production?" What are the correct trade-offs?

Live Engine

Select Topic

easyFeature Selection And Engineering

A filter method (chi-squared test) is used to select the top 20 features from 100. A wrapper method (recursive feature elimination with cross-validation) is also run on the same dataset. The wrapper method achieves 4% higher test accuracy but takes 50× longer. A team lead asks: "which should we use in production?" What are the correct trade-offs?