Dear all,
The Department of Economics and Finance at Luiss University in Rome (*https://economiaefinanza.luiss.it https://economiaefinanza.luiss.it/*) is pleased to announce the following seminar:
*Speaker*: Brunero Liseo, Sapienza University of Rome *Title*: A Multivariate Copula-Based Conformal Bayesian Framework for Doping Detection
*When*: March 6th, 14:30 *Where*: Viale Romania, 32 00197 Rome *Meeting room*: 405
*Abstract*: Doping control is an essential component of anti-doping organizations for protecting sports competitions. Since 2009, this mission has been complemented worldwide by the Athlete Biological Passport (ABP), which monitors athletes’ profiles over time. The practical implementation of the ABP is based on a Bayesian framework, called ADAPTIVE, intended to identify individual reference ranges outside of which an observation may indicate doping abuse. Currently, this method follows a univariate approach, relying on simultaneous analysis of different markers. This work extends the ADAPTIVE method to a multivariate testing framework, making use of copula models to couple the marginal distribution of biomarkers with their dependence structure. After introducing the proposed copula-based hierarchical model, we discuss our approach to inference, grounded in a Bayesian spirit, and present an extension to multidimensional predictive reference regions. We guarantee exact coverage of the regions through the use of a conformal prediction approach. Focusing on the hematological module of the ABP, we evaluate the proposed framework in both data-driven simulations and real data. Based on joint work with Nina Deliu.
*Webpage*: https://economiaefinanza.luiss.it/research-seminar/a-multivariate-copula-bas...
*Should you be interested, please kindly send me an e-mail.*
Best wishes, Alessia Caponera