Research on Black-Litterman portfolio model based on financial text sentiment mining—Evidence from the posting text of eastmoney stock forum and the A share market
XU Weijun, HUANG Jinglong, FU Zhineng, ZHANG Weiguo
Operations Research Transactions . 2022, (4): 1 -14 .  DOI: 10.15960/j.cnki.issn.1007-6093.2022.04.001