Uncovering the Causes of City Smog: A Machine Learning Approach
Air pollution, specifically fine particulate matter (PM2. 5), is a big problem in many Chinese cities. To tackle this, researchers used a machine-learning model that combines CatBoost and Tree-Structured Parzen Estimator (TPE) to study PM2. 5 levels in 297 cities from 2000 to 2021. They found that s