并列题名：Research on public opinion analysis and decision support based on big data Research on public opinion analysis and decision support based on big data 并列题名：Agricultural policy analysis and decision support in China 并列题名：Application of spatial analysis and decision support in urban planning 并列题名：Research on public opinion and sentencing justice Agricultural policy analysis and decision support in China 并列题名：Research on network economics based on big data 并列题名：Research on recommendation analysis in complex data