arXiv subjects
Publications and source records attributed to Claudie Chabriac.
Elements related to the largest complete excursion of a reflected BM stopped at a fixed time. Application to local score.
We consider a model selection estimator of the covariance of a random process. Using the Unbiased Risk Estimation (URE) method, we build an estimator of the risk which allows to select an estimator in a collection of model. Then, we present an oracle inequality which ensures that the risk of the selected estimator is close to the risk of the oracle. Simulations show the efficiency of this methodology.