= Brigitte Le Roux
{c}
<Brigitte Le Roux> studies <geometric data analysis>, including <correspondence analysis> and <principal component analysis>. Her research account describes investigations of how principal axes change when observations, weights or the underlying <Euclidean geometry> are modified. This stability question asks which apparent structures survive a change in the analysis, rather than treating every fitted axis as intrinsic to the data.https://brigitte-le-roux.com/en/recherches/[Geometric Data Analysis: Foundations, stability and sensitivity of principal axes]{ref}
Her joint book with <Henry Rouanet>, <Geometric Data Analysis by Brigitte Le Roux and Henry Rouanet>, develops the weighted-cloud approach through <correspondence analysis>, Euclidean clouds and <principal component analysis>. It connects the <linear algebra> of projections with explicit choices about representation of multivariate observations.<Geometric Data Analysis by Brigitte Le Roux and Henry Rouanet>[Chapters 2–4]{ref}
\Image[https://brigitte-le-roux.com/data/photoweb.jpg]
{title=Brigitte Le Roux, portrait identified on her personal research website}
Back to article page
