# Data Analysis

lstat2110  2019-2020  Louvain-la-Neuve

Data Analysis
Note from June 29, 2020
Although we do not yet know how long the social distancing related to the Covid-19 pandemic will last, and regardless of the changes that had to be made in the evaluation of the June 2020 session in relation to what is provided for in this learning unit description, new learnig unit evaluation methods may still be adopted by the teachers; details of these methods have been - or will be - communicated to the students by the teachers, as soon as possible.
5 credits
30.0 h + 7.5 h
Q1
Teacher(s)
Language
French
Main themes
Contents: - Reminders of algebra and geometry useful for multivariate data analysis - Basic principles of factorial methods - Principal components analysis (PCA) - Canonical correlation - Factorial discriminant analysis (FDA) - Factorial correspondence analysis (FCA simple and multiple) - Cluster analysis - Data analysis in practice
Aims
 At the end of this learning unit, the student is able to : 1 General objectives. Presentation of the modern techniques for the analysis of huge multivariate data sets. Developing the basic tools for " data mining ". Specific objectives. At the end of this course, the students should be able to: - Manipulate and describe the information contained in huge data sets; - Understand why such or such method is appropriate; - Give a correct interpretation of the resulting pictures and of the output of the software; - Solve problems with real data sets.

The contribution of this Teaching Unit to the development and command of the skills and learning outcomes of the programme(s) can be accessed at the end of this sheet, in the section entitled “Programmes/courses offering this Teaching Unit”.
Content
• Data matrices
• Principal component analysis
• Classification: k-means clustering and hierarchical clustering
• Linear discriminant analysis
• Simple and multiple correspondence analysis
• Principal component regression
• Partial least squares regression
Implementation of the methods is done in the R language using the RStudio integrated development environment, and the R Markdown framework is used to combine text, mathematical formulas, R code and R output (tables, graphs).
Teaching methods
During the lectures, the teacher presents the various statistical methods, covering the questions and data-sets to which they apply, the underlying mathematical theory, and how to program them in R. Homework assignments are given, the solution of which is discussed in the lectures too.
The tutorials take place in computer rooms and have as primary objective to allow the students to train themselves in applying the method on real data-sets in R.
Evaluation methods
Tests during the lectures:
• Test 1: Data matrices and principal component analysis
• Test 2: Clustering and linear discriminant analysis
Participation is optional. At the discretion of the student, each test can replace the part of the exam on the same topic.
Exam (12/20):
• written, closed book, with the help of a formula list and a pocket calculator
• exercises and questions involving (small) calculcations, interpretation of computer output, and understanding of the main results and formulas
Project (8/20):
• individually or in pairs
• data application, the data being sought by the students themselves
• written report in R Markdown, to be submitted before the exam session
• detailed instructions will be provided in the exercise sessions and on the MoodleUCL course page
Other information
Prerequisities:
• vector and matrix calculus
• Euclidean geometry: points, spaces, orthogonality, distances, angles
• basic notions in statistiques: sample mean, (co)variance, correlation, covariance matrix, conditional probabilities, normal distribution, chi-square distribution
Online resources
All teaching material is made available through the MoodleUCL cours page: slides, exercises, software scripts. In addition, links to interesting external material are given too: on-line courses, videos, software documentation.
Bibliography
• Escofier, B. et Pagès, J. (2016): Analyses factorielles simples et multiples, 5e édition, Dunod, Paris.
• Lebart, L., Piron, M. et Morineau, A. (2006): Statistique exploratoire multidimensionnelle, 4e édition, Dunod, Paris.
• Saporta, G. (2011): Probabilités, analyse des données et statistique, 3e édition révisée, Editions TECHNIP, Paris.
Teaching materials
• matériel sur moodle
Faculty or entity

#### Programmes / formations proposant cette unité d'enseignement (UE)

Title of the programme
Sigle
Credits
Prerequisites
Aims
Approfondissement en statistique et sciences des données

Minor in Statistics, Actuarial Sciences and Data Sciences

Master [120] in Mathematics

Master [120] in Statistic: General

Master [120] in Statistic: Biostatistics

Master [120] in Economics: General

Master [120] in Mathematical Engineering

Certificat d'université : Statistique et sciences des données (15/30 crédits)

Master [120] in Data Science : Statistic

Master [120] in Biomedical Engineering