User guide# TODO: define the target audience of the user guide. Table of contents# 1. Definition of concepts 1.1. Variable Importance 1.2. Variable Selection 1.3. Variable Selection vs Variable Importance 1.4. Types of VI methods 1.5. High-dimension and correlation 1.6. Statistical Inference 1.7. References 2. GLM methods 2.1. Desparsified Lasso 2.2. Knockoffs 3. Model-agnostic methods 3.1. Total Sobol Index 3.2. Leave-One-Covariate-Out 3.3. Conditional Feature Importance 3.3.1. Theoretical index 3.3.2. Estimation procedure 3.3.3. Inference 3.3.4. Regression example 3.3.5. Classification example 3.3.6. References 3.4. Permutation Feature Importance 4. Marginal methods 4.1. Leave-One-Covariate-In 5. Tools for visualization 6. Measuring the importance of feature groups 7. Inference in high dimension