From theregister.com
Faced with limited resources in a pandemic, Greece turned to machine-learning software to decide which sorts of travelers to test for COVID-19 as they arrived in the country.
The system in question used reinforcement learning, specifically multi-armed bandit algorithms, to identify which potentially infected, asymptomatic passengers were worth testing and putting into quarantine if necessary. It also was able to produce up-to-date statistics on infections for officials to analyze, such as early signs of the emergence of COVID-19 hot spots abroad, we’re told.