“需要运用大数据的技术和方法,让大数据成为城市人群密集场所安全风险管控的科学管理的有效利器,成为提高大城市应急管理能力硬软并举的有效方法。”2014年11月,国务院对城市规模划分标准进行了调整,规定城市常住人口过1000万的为超大城市,500万至1000万的为特大型城市,100万至500万的为大城市。2012年11月,国家科技部就组织开展了智慧城市示范工作。2013 “The need to use big data technologies and methods to make big data an effective tool for scientific management of security risk control in densely populated urban areas has become an effective way to improve the resilience of metropolitan emergency management.” "In November 2014, The State Council has adjusted the criteria for dividing the city scale, stipulating that the urban permanent population should exceed 10 million for the mega-cities, 5 to 10 million for the mega-cities and 1 to 5 million for the large cities. In November 2012, the Ministry of Science and Technology organized a smart city demonstration project. 2013