Linear models
Summary
Regression modelling is a fundamental tool of statistics, because it describes how the law of a random variable of interest may depend on other variables. This course aims to familiarize students with linear models and some of their extensions, which lie at the basis of more general regression model
Content
- Properties of the multivariate Gaussian distribution and related quadratic forms.
- Gaussian linear regression: likelihood, least squares, geometrical interpretation.
- Distribution theory, confidence and prediction intervals.
- Gauss-Markov theorem.
- Model checking and validation: residual diagnostics, outliers and leverage points.
- Analysis of variance.
- Model selection: bias/variance tradeoff, stepwise procedures, information-based criteria.
- Multicollinearity and penalised estimation: ridge regression, LASSO.
- Robust regression and M-estimation.
- Nonparametric regression and smoothing splines.
Learning Prerequisites
Recommended courses
Analysis, Linear Algebra, Probability, Statistics
Learning Outcomes
By the end of the course, the student must be able to:
- Recognize when a linear model is appropriate to model dependence
- Interpret model parameters both geometrically and in applied contexts
- Estimate the parameters determining a linear model from empirical observations
- Test hypotheses related to the structural characteristics of a linear model
- Construct confidence bounds for model parameters and model predictions
- Analyze variation into model components and error components
- Contrast competing linear models in terms of fit and parsimony
- Construct linear models to balance bias, variance and interpretability
- Assess / Evaluate the fit of a linear model to data and the validity of its assumptions.
- Prove basic results related to the statistical theory of linear models
Teaching methods
Lectures ex cathedra, exercises in class, take-home projects
Assessment methods
Continuous control, final exam.
Seconde tentative : Dans le cas de l'art. 3 al. 5 du Règlement de section, l'enseignant décide de la forme de l'examen qu'il communique aux étudiants concernés.
Supervision
| Office hours | No |
| Assistants | Yes |
| Forum | Yes |
In the programs
- Semester: Fall
- Exam form: Written (winter session)
- Subject examined: Linear models
- Courses: 2 Hour(s) per week x 14 weeks
- Exercises: 2 Hour(s) per week x 14 weeks
- Type: optional
- Semester: Fall
- Exam form: Written (winter session)
- Subject examined: Linear models
- Courses: 2 Hour(s) per week x 14 weeks
- Exercises: 2 Hour(s) per week x 14 weeks
- Type: optional
- Semester: Fall
- Exam form: Written (winter session)
- Subject examined: Linear models
- Courses: 2 Hour(s) per week x 14 weeks
- Exercises: 2 Hour(s) per week x 14 weeks
- Type: optional
- Semester: Fall
- Exam form: Written (winter session)
- Subject examined: Linear models
- Courses: 2 Hour(s) per week x 14 weeks
- Exercises: 2 Hour(s) per week x 14 weeks
- Type: optional
- Semester: Fall
- Exam form: Written (winter session)
- Subject examined: Linear models
- Courses: 2 Hour(s) per week x 14 weeks
- Exercises: 2 Hour(s) per week x 14 weeks
- Type: optional