Innovation and development of library service system in the era of big data 并列题名:Innovation and development of library service system in the era of big data System analysis and design of library information system in the era of big data Construction and development of intermediary service system for intellectual property 并列题名:System analysis and design of library information system in the era of big data Research on the development of moral education in universities in the era of big data 并列题名:Construction and development of intermediary service system for intellectual property 并列题名:Research on the development of moral education in universities in the era of big data Research on the development measures of digital economy in the era of big data a study on innovation and development of mega television industry in the era of media convergence