We recall the main concepts of the Le Cam theory of statistical experiments, especially the notion of Le Cam distance and its properties. We also review classical tools for bounding such a distance before presenting some examples. A proof of the classical equivalence result between density estimation problems and Gaussian white noise models will be analyzed.
Received: Avril 2016.
Published online: January 2017.
Ester MariucciMathematical Institute at Leiden University, the Netherlands.