[The National Data Administration held a symposium on data annotation pilot work to promote the construction of high-quality data sets by "determining supply based on demand" and "promoting construction based on use"] On October 31, according to the official WeChat account of the National Data Administration, the National Data Administration organized a meeting to promote the pilot work on data annotation in Beijing on the afternoon of October 27 to summarize the progress of the pilot work on data annotation, exchange typical experiences, and deploy key tasks for the next stage. The meeting emphasized that data annotation has significant scene-based characteristics and requires coordinated linkage and joint planning by various localities and entities. The next step is to form a data set demand map based on demand and supply, conduct statistical surveys of the upstream and downstream entities associated with pilot cities for data annotation, and grasp the demand for high-quality data sets in the near, medium and long term. The second is to "promote construction through use" to promote the implementation of "modulus resonance" scenarios, and guide data annotation pilot cities, industry high-quality data set construction chain owners and pilot pilot units to test the effectiveness of the work with scenario application effects. The third is to continue to guide annotated data sets to be registered in the national data set management service system, to track the application of data sets that have passed quality assessment, and to promote the effective reuse and expansion of data sets.