北航经管学院“经济统计论坛”系列讲座

（2026年第10期，总第47期）

讲座题目：When less is better: The role of veto before selection

讲座时间：2026.11.16（周一）9:30-10:30

讲座地点：新主楼A618

讲座嘉宾：Fotios Petropoulos，University of Bath

讲座嘉宾 简介

Professor Fotios Petropoulos is an internationally recognised scholar in forecasting, operations research, and supply chain management, with over 80 publications and ~10,000 citations. His research has earned prestigious awards and contributed to widely used forecasting software. He has held senior editorial and leadership roles, including REF Director at the University of Bath and Senior Editor of the International Journal of Forecasting. He has also organised international conferences, delivered invited lectures worldwide, and contributed extensively to teaching and research supervision.

讲座概要

Selecting the best candidate is often difficult, but identifying poor candidates may be easier. We introduce veto, a general two-stage procedure that first rejects unpromising candidates before selecting from the survivors. We establish conditions under which veto improves selection and identify the properties of effective rejection. Through simulations and an application to forecasting model selection using 50,045 time series, we demonstrate the benefits of veto, including when multiple selection criteria are aggregated. Our findings establish rejection as a complementary decision-making tool.