1. General concepts# 1.1. Definition of concepts 1.1.1. Variable Importance 1.1.2. Variable Selection 1.1.3. Variable Selection vs Variable Importance 1.1.4. Types of VI methods 1.1.5. High-dimension and correlation 1.1.6. Statistical Inference 1.1.7. References 1.2. Statistical guarantees for variable selection 1.2.1. p-values 1.2.2. Family Wise Error Rate (FWER) 1.2.3. False Discovery Rate (FDR) 1.2.4. References 1.3. Generalized Linear Model (GLM) Coefficient 1.3.1. References 1.4. Generalized Total Sobol Index 1.4.1. Mean Squared Error (MSE) case 1.4.2. Cross-entropy case 1.4.3. References