Enhong Chen & Yang Gao 
Big Data 
9th CCF Conference, BigData 2021, Guangzhou, China, January 8-10, 2022, Revised Selected Papers

This book constitutes the proceedings of the 9th CCF Conference on Big Data, Big Data 2021, held in Guangzhou, China, in January 2022. Due to the COVID-19 pandemic Big Data 2021 was postponed to 2022. The 21 full papers presented in this volume were carefully reviewed and selected from 66 submissions. They present recent research on theoretical and technical aspects on big data, as well as on digital economy demands in big data applications.