基于文本挖掘方法的环境信息披露指标体系改进——以川渝经济区上市企业为例
기우문본알굴방법적배경신식피로지표체계개진——이천투경제구상시기업위례
Improvement of Environmental Disclosure Index Based on Text Mining--The Empirical Analysis of Sichuan and Chongqing Listed Companies