Using compositional and Dirichlet models for market share regression

J Morais, C Thomas-Agnan… - Journal of Applied Statistics, 2018 - Taylor & Francis
When the aim is to model market shares, the marketing literature proposes some regression
models which can be qualified as attraction models. They are generally derived from an …

A tour of regression models for explaining shares

J Morais, M Simioni, C Thomas-Agnan - 2016 - publications.ut-capitole.fr
This paper aims to present and compare statistical modeling methods adapted for shares as
dependent variables. Shares are characterized by the following constraints: positivity and …

Impact of media investments on brands' market shares: a compositional data analysis approach

J Morais - 2017 - hal.science
The aim of this CIFRE thesis, realized with the market research institute BVA in collaboration
with the automobile manufacturer Renault, is to build a model in order to measure the impact …

Exploring land use prediction errors from area frame survey data

R Chakir, T Laurent, A Ruiz-Gazen… - Case Studies In …, 2018 - ojs-test.apps.ocp.math.cnrs.fr
We consider the problem of areal level land use classification from the information provided
by point level databases such as the area frame surveys (American NRI survey, EUROSTAT …