# Data Element Sharing in Convergence Media Ecology Based on Evolutionary Game
## 1 Introduction
User data: These describe the user information, including the user's basic information, account information, behavioral data, etc. User data can help parties in the ecosystem understand user needs and behaviors and better-targeted services [28]. 11. Authentication data: These describe the content authentication information and the user identity authentication information. Authentication data can help parties in the ecosystem to confirm the authenticity of the content and the identity of users and improve the credibility of information within the ecology [29]. 12. Transaction data: These include payment, transfer, points exchange and other data between users, which can be safely recorded and stored so as to realize the security and traceability of transaction data. 13. Circulation data: These describe the circulation of digital assets, including digital asset transaction records, distribution records, etc. Circulation data can help parties within the ecosystem assess the value of the content and better manage digital assets. With the transformation of the media industry to digital, much data are generated and collected, and strengthening the circulation of data elements has very important significance. We must pay attention to privacy, copyright and other related issues in the process of circulation, and must be in accordance with national laws and ecological requirements. The sharing of data elements in convergence media ecology can greatly improve the circulation of data elements and enhance the value of data in ecology. However, the sharing of data elements in ecology may face the following problems [30; 31; 32]:  
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2. Insufficient willingness to participate in sharing. The enthusiasm of ecological nodes to participate in the circulation of data elements is not high, and the phenomenon of data islands is serious, resulting in the value of data elements in the convergence media ecology is not fully utilized. Therefore, encouraging nodes to participate in the circulation of data elements has become a key problem facing the ecological development of convergence media. 3. The circulation mechanism of a data element is incomplete. The participation of ecological nodes in the circulation process of data elements is not clear, resulting in the chaotic circulation process of data elements. Therefore, the formulation of detailed and clear data element circulation strategies is an important factor for the sustainable development of convergence media ecology. 4. The implementation of an incentive mechanism is not in place. The implementation of the incentive mechanism of ecological node circulation data is not in place, which easily leads to damage to the enthusiasm of nodes. Therefore, the accurate and timely implementation of incentive policies is an important guarantee for the sustainable development of convergence media ecology. 5. Data privacy and security issues. It must be carried out on the premise of complying with national laws and relevant ecological requirements. Blockchain and other technologies can ensure the immutability and security of data, but some sensitive data also need to be encrypted to protect data privacy. 6. Data quality issues. The quality of data is crucial to the normal operation of the media ecology, so data need to be monitored and reviewed to ensure its quality. 7. Data standard issues. Data standards may vary for different organizations and individuals, so uniform data standards need to be used to facilitate the flow of data elements. 8. Data equity issues. Data element sharing may cause disputes over data rights and interests, so it is necessary to clarify the ownership of data and the right to use them to avoid disputes. In summary, the node willingness, data element ownership, data security risk, data element sharing cost and other issues involved in data element sharing in ecology still restrict the improvement of the level of data element sharing [33].