基于三阶段Malmquist-PNN的区域绿色创新效率评价与智能诊断研究
许学国,周燕妃
Research on Regional Green Innovation Efficiency Evaluation and Intelligent Diagnosis based on Three-stage Malmquist-PNN
Xu Xueguo,Zhou Yanfei
科技进步与对策 . 2020, (24): 54 -62 .  DOI: 10.6049/kjjbydc.2020060077