feature selection vs feature extraction what is feature selection difference between feature extraction and feature selection dimensionality reduction feature selection how does feature extraction work? does feature extraction use dimensionality? does feature selection affect dimensionality reduction? difference between feature extraction and feature selection how does feature selection work feature extraction vs feature selection what is feature extraction what is feature selection and feature extraction how does feature extraction work and what it relates to a feature selection difference between feature selection and feature extraction feature extraction vs feature selection what is feature extraction difference between feature extraction and feature selection how do feature extraction and feature selection work how does feature extraction work is feature selection vs feature extraction more preferred