Research on brand evaluation method based on multi-source data 并列题名：Research on brand evaluation method based on multi-source data research on analysis method based on design process research on product design methods based on sharing concept research on design methods based on problem discovery Research on method and application for tourism product design based on multi-source information Research on effect evaluation of China's new energy vehicle industry policy based on multi-source data research on optimal design methods based on counterfactual theory Research on urban spatial structure based on mobile positioning big data