Predicting the operational carbon emissions of urban community service units by using a two-stage explainable machine learning method: a case study in Nanjing, China使用两阶段可解释机器学习方法预测城市社区服务单位的运营碳排放:一项在中国南京的案例研究Journal of Asian Architecture and Building EngineeringIF1.62025-12-010PRE